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Diffstat (limited to 'html/edit')
| -rw-r--r-- | html/edit/001-editor.mu.html | 539 | ||||
| -rw-r--r-- | html/edit/002-typing.mu.html | 1092 | ||||
| -rw-r--r-- | html/edit/003-shortcuts.mu.html | 3107 | ||||
| -rw-r--r-- | html/edit/004-programming-environment.mu.html | 826 | ||||
| -rw-r--r-- | html/edit/005-sandbox.mu.html | 555 | ||||
| -rw-r--r-- | html/edit/006-sandbox-edit.mu.html | 212 | ||||
| -rw-r--r-- | html/edit/007-sandbox-delete.mu.html | 149 | ||||
| -rw-r--r-- | html/edit/008-sandbox-test.mu.html | 211 | ||||
| -rw-r--r-- | html/edit/009-sandbox-trace.mu.html | 248 | ||||
| -rw-r--r-- | html/edit/010-warnings.mu.html | 428 | ||||
| -rw-r--r-- | html/edit/011-editor-undo.mu.html | 2095 |
11 files changed, 9462 insertions, 0 deletions
diff --git a/html/edit/001-editor.mu.html b/html/edit/001-editor.mu.html new file mode 100644 index 00000000..be568c9d --- /dev/null +++ b/html/edit/001-editor.mu.html @@ -0,0 +1,539 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/001-editor.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muRecipe { color: #ff8700; } +.muData { color: #ffff00; } +.Special { color: #ff6060; } +.muScenario { color: #00af00; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## the basic editor data structure, and how it displays text to the screen</span> + +<span class="Comment"># temporary main for this layer: just render the given string at the given</span> +<span class="Comment"># screen dimensions, then stop</span> +<span class="muRecipe">recipe!</span> main [ + <span class="Constant">local-scope</span> + text:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + open-console + hide-screen <span class="Constant">0/screen</span> + new-editor text, <span class="Constant">0/screen</span>, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + show-screen <span class="Constant">0/screen</span> + wait-for-event <span class="Constant">0/console</span> + close-console +] + +<span class="muScenario">scenario</span> editor-initially-prints-string-to-screen [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + run [ + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + ] + screen-should-contain [ + <span class="Comment"># top line of screen reserved for menu</span> + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muData">container</span> editor-data [ + <span class="Comment"># editable text: doubly linked list of characters (head contains a special sentinel)</span> + data:address:duplex-list:character + top-of-screen:address:duplex-list:character + bottom-of-screen:address:duplex-list:character + <span class="Comment"># location before cursor inside data</span> + before-cursor:address:duplex-list:character + + <span class="Comment"># raw bounds of display area on screen</span> + <span class="Comment"># always displays from row 1 (leaving row 0 for a menu) and at most until bottom of screen</span> + left:number + right:number + <span class="Comment"># raw screen coordinates of cursor</span> + cursor-row:number + cursor-column:number +] + +<span class="Comment"># editor:address, screen <- new-editor s:address:array:character, screen:address, left:number, right:number</span> +<span class="Comment"># creates a new editor widget and renders its initial appearance to screen.</span> +<span class="Comment"># top/left/right constrain the screen area available to the new editor.</span> +<span class="Comment"># right is exclusive.</span> +<span class="muRecipe">recipe</span> new-editor [ + <span class="Constant">local-scope</span> + s:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># no clipping of bounds</span> + left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right<span class="Special"> <- </span>subtract right, <span class="Constant">1</span> + result:address:editor-data<span class="Special"> <- </span>new <span class="Constant">editor-data:type</span> + <span class="Comment"># initialize screen-related fields</span> + x:address:number<span class="Special"> <- </span>get-address *result, <span class="Constant">left:offset</span> + *x<span class="Special"> <- </span>copy left + x<span class="Special"> <- </span>get-address *result, <span class="Constant">right:offset</span> + *x<span class="Special"> <- </span>copy right + <span class="Comment"># initialize cursor</span> + x<span class="Special"> <- </span>get-address *result, <span class="Constant">cursor-row:offset</span> + *x<span class="Special"> <- </span>copy <span class="Constant">1/top</span> + x<span class="Special"> <- </span>get-address *result, <span class="Constant">cursor-column:offset</span> + *x<span class="Special"> <- </span>copy left + init:address:address:duplex-list<span class="Special"> <- </span>get-address *result, <span class="Constant">data:offset</span> + *init<span class="Special"> <- </span>push-duplex <span class="Constant">167/§</span>, <span class="Constant">0/tail</span> + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *result, <span class="Constant">top-of-screen:offset</span> + *top-of-screen<span class="Special"> <- </span>copy *init + y:address:address:duplex-list<span class="Special"> <- </span>get-address *result, <span class="Constant">before-cursor:offset</span> + *y<span class="Special"> <- </span>copy *init + result<span class="Special"> <- </span>insert-text result, s + <span class="Comment"># initialize cursor to top of screen</span> + y<span class="Special"> <- </span>get-address *result, <span class="Constant">before-cursor:offset</span> + *y<span class="Special"> <- </span>copy *init + <span class="Comment"># initial render to screen, just for some old tests</span> + _, _, screen, result<span class="Special"> <- </span>render screen, result +<span class="Constant"> <editor-initialization></span> + <span class="muControl">reply</span> result +] + +<span class="muRecipe">recipe</span> insert-text [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + text:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># early exit if text is empty</span> + <span class="muControl">reply-unless</span> text, editor/same-as-ingredient:<span class="Constant">0</span> + len:number<span class="Special"> <- </span>length *text + <span class="muControl">reply-unless</span> len, editor/same-as-ingredient:<span class="Constant">0</span> + idx:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Comment"># now we can start appending the rest, character by character</span> + curr:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal idx, len + <span class="muControl">break-if</span> done? + c:character<span class="Special"> <- </span>index *text, idx + insert-duplex c, curr + <span class="Comment"># next iter</span> + curr<span class="Special"> <- </span>next-duplex curr + idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muScenario">scenario</span> editor-initializes-without-data [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">3/height</span> + run [ + <span class="Constant">1</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">0/data</span>, screen:address, <span class="Constant">2/left</span>, <span class="Constant">5/right</span> + <span class="Constant">2</span>:editor-data<span class="Special"> <- </span>copy *<span class="Constant">1</span>:address:editor-data + ] + memory-should-contain [ + <span class="Comment"># 2 (data) <- just the § sentinel</span> + <span class="Comment"># 3 (top of screen) <- the § sentinel</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># bottom-of-screen; null since text fits on screen</span> + <span class="Comment"># 5 (before cursor) <- the § sentinel</span> + <span class="Constant">6</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># left</span> + <span class="Constant">7</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># right (inclusive)</span> + <span class="Constant">8</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># cursor row</span> + <span class="Constant">9</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># cursor column</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># last-row:number, last-column:number, screen, editor <- render screen:address, editor:address:editor-data</span> +<span class="Comment">#</span> +<span class="Comment"># Assumes cursor should be at coordinates (cursor-row, cursor-column) and</span> +<span class="Comment"># updates before-cursor to match. Might also move coordinates if they're</span> +<span class="Comment"># outside text.</span> +<span class="muRecipe">recipe</span> render [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">reply-unless</span> editor, <span class="Constant">1/top</span>, <span class="Constant">0/left</span>, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + screen-height:number<span class="Special"> <- </span>screen-height screen + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + <span class="Comment"># traversing editor</span> + curr:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + prev:address:duplex-list<span class="Special"> <- </span>copy curr <span class="Comment"># just in case curr becomes null and we can't compute prev-duplex</span> + curr<span class="Special"> <- </span>next-duplex curr + <span class="Comment"># traversing screen</span> +<span class="Constant"> +render-loop-initialization</span> + color:number<span class="Special"> <- </span>copy <span class="Constant">7/white</span> + row:number<span class="Special"> <- </span>copy <span class="Constant">1/top</span> + column:number<span class="Special"> <- </span>copy left + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + screen<span class="Special"> <- </span>move-cursor screen, row, column + <span class="Delimiter">{</span> +<span class="Constant"> +next-character</span> + <span class="muControl">break-unless</span> curr + off-screen?:boolean<span class="Special"> <- </span>greater-or-equal row, screen-height + <span class="muControl">break-if</span> off-screen? + <span class="Comment"># update editor-data.before-cursor</span> + <span class="Comment"># Doing so at the start of each iteration ensures it stays one step behind</span> + <span class="Comment"># the current character.</span> + <span class="Delimiter">{</span> + at-cursor-row?:boolean<span class="Special"> <- </span>equal row, *cursor-row + <span class="muControl">break-unless</span> at-cursor-row? + at-cursor?:boolean<span class="Special"> <- </span>equal column, *cursor-column + <span class="muControl">break-unless</span> at-cursor? + *before-cursor<span class="Special"> <- </span>copy prev + <span class="Delimiter">}</span> + c:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> +<span class="Constant"> <character-c-received></span> + <span class="Delimiter">{</span> + <span class="Comment"># newline? move to left rather than 0</span> + newline?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> newline? + <span class="Comment"># adjust cursor if necessary</span> + <span class="Delimiter">{</span> + at-cursor-row?:boolean<span class="Special"> <- </span>equal row, *cursor-row + <span class="muControl">break-unless</span> at-cursor-row? + left-of-cursor?:boolean<span class="Special"> <- </span>lesser-than column, *cursor-column + <span class="muControl">break-unless</span> left-of-cursor? + *cursor-column<span class="Special"> <- </span>copy column + *before-cursor<span class="Special"> <- </span>prev-duplex curr + <span class="Delimiter">}</span> + <span class="Comment"># clear rest of line in this window</span> + clear-line-delimited screen, column, right + <span class="Comment"># skip to next line</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + column<span class="Special"> <- </span>copy left + screen<span class="Special"> <- </span>move-cursor screen, row, column + curr<span class="Special"> <- </span>next-duplex curr + prev<span class="Special"> <- </span>next-duplex prev + <span class="muControl">loop</span> <span class="Constant">+next-character:label</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="Comment"># at right? wrap. even if there's only one more letter left; we need</span> + <span class="Comment"># room for clicking on the cursor after it.</span> + at-right?:boolean<span class="Special"> <- </span>equal column, right + <span class="muControl">break-unless</span> at-right? + <span class="Comment"># print wrap icon</span> + print-character screen, <span class="Constant">8617/loop-back-to-left</span>, <span class="Constant">245/grey</span> + column<span class="Special"> <- </span>copy left + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + screen<span class="Special"> <- </span>move-cursor screen, row, column + <span class="Comment"># don't increment curr</span> + <span class="muControl">loop</span> <span class="Constant">+next-character:label</span> + <span class="Delimiter">}</span> + print-character screen, c, color + curr<span class="Special"> <- </span>next-duplex curr + prev<span class="Special"> <- </span>next-duplex prev + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># save first character off-screen</span> + bottom-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">bottom-of-screen:offset</span> + *bottom-of-screen<span class="Special"> <- </span>copy curr + <span class="Comment"># is cursor to the right of the last line? move to end</span> + <span class="Delimiter">{</span> + at-cursor-row?:boolean<span class="Special"> <- </span>equal row, *cursor-row + cursor-outside-line?:boolean<span class="Special"> <- </span>lesser-or-equal column, *cursor-column + before-cursor-on-same-line?:boolean<span class="Special"> <- </span>and at-cursor-row?, cursor-outside-line? + above-cursor-row?:boolean<span class="Special"> <- </span>lesser-than row, *cursor-row + before-cursor?:boolean<span class="Special"> <- </span>or before-cursor-on-same-line?, above-cursor-row? + <span class="muControl">break-unless</span> before-cursor? + *cursor-row<span class="Special"> <- </span>copy row + *cursor-column<span class="Special"> <- </span>copy column + *before-cursor<span class="Special"> <- </span>copy prev + <span class="Delimiter">}</span> + <span class="muControl">reply</span> row, column, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span> +] + +<span class="muRecipe">recipe</span> clear-line-delimited [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + column:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-than column, right + <span class="muControl">break-if</span> done? + print-character screen, <span class="Constant">32/space</span> + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> clear-screen-from [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + column:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># if it's the real screen, use the optimized primitive</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> screen + clear-display-from row, column, left, right + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span> + <span class="Delimiter">}</span> + <span class="Comment"># if not, go the slower route</span> + screen<span class="Special"> <- </span>move-cursor screen, row, column + clear-line-delimited screen, column, right + clear-rest-of-screen screen, row, left, right + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muRecipe">recipe</span> clear-rest-of-screen [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + screen<span class="Special"> <- </span>move-cursor screen, row, left + screen-height:number<span class="Special"> <- </span>screen-height screen + <span class="Delimiter">{</span> + at-bottom-of-screen?:boolean<span class="Special"> <- </span>greater-or-equal row, screen-height + <span class="muControl">break-if</span> at-bottom-of-screen? + screen<span class="Special"> <- </span>move-cursor screen, row, left + clear-line-delimited screen, left, right + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-initially-prints-multiple-lines [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">5/height</span> + run [ + s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + new-editor s:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .def .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-initially-handles-offsets [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">5/height</span> + run [ + s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + new-editor s:address:array:character, screen:address, <span class="Constant">1/left</span>, <span class="Constant">5/right</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . abc .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-initially-prints-multiple-lines-at-offset [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">5/height</span> + run [ + s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + new-editor s:address:array:character, screen:address, <span class="Constant">1/left</span>, <span class="Constant">5/right</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . abc .</span> + <span class="Constant"> . def .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-initially-wraps-long-lines [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">5/height</span> + run [ + s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc def]</span> + new-editor s:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc ↩.</span> + <span class="Constant"> .def .</span> + <span class="Constant"> . .</span> + ] + screen-should-contain-in-color <span class="Constant">245/grey</span> [ + <span class="Constant"> . .</span> + <span class="Constant"> . ↩.</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-initially-wraps-barely-long-lines [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">5/height</span> + run [ + s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcde]</span> + new-editor s:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + ] + <span class="Comment"># still wrap, even though the line would fit. We need room to click on the</span> + <span class="Comment"># end of the line</span> + screen-should-contain [ + <span class="Constant"> . .</span> +<span class="Constant"> .abcd↩.</span> + <span class="Constant"> .e .</span> + <span class="Constant"> . .</span> + ] + screen-should-contain-in-color <span class="Constant">245/grey</span> [ + <span class="Constant"> . .</span> + <span class="Constant"> . ↩.</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-initializes-empty-text [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">5/height</span> + run [ + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># cursor column</span> + ] +] + +<span class="Comment"># just a little color for mu code</span> + +<span class="muScenario">scenario</span> render-colors-comments [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">5/height</span> + run [ + s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant"># de</span> +<span class="Constant">f]</span> + new-editor s:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .# de .</span> + <span class="Constant"> .f .</span> + <span class="Constant"> . .</span> + ] + screen-should-contain-in-color <span class="Constant">12/lightblue</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .# de .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] + screen-should-contain-in-color <span class="Constant">7/white</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .f .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><character-c-received></span> [ + color<span class="Special"> <- </span>get-color color, c +] + +<span class="Comment"># color <- get-color color:number, c:character</span> +<span class="Comment"># so far the previous color is all the information we need; that may change</span> +<span class="muRecipe">recipe</span> get-color [ + <span class="Constant">local-scope</span> + color:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + c:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + color-is-white?:boolean<span class="Special"> <- </span>equal color, <span class="Constant">7/white</span> + <span class="Comment"># if color is white and next character is '#', switch color to blue</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> color-is-white? + starting-comment?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">35/#</span> + <span class="muControl">break-unless</span> starting-comment? + trace <span class="Constant">90</span>, <span class="Constant">[app]</span>, <span class="Constant">[switch color back to blue]</span> + color<span class="Special"> <- </span>copy <span class="Constant">12/lightblue</span> + <span class="muControl">jump</span> <span class="Constant">+exit:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># if color is blue and next character is newline, switch color to white</span> + <span class="Delimiter">{</span> + color-is-blue?:boolean<span class="Special"> <- </span>equal color, <span class="Constant">12/lightblue</span> + <span class="muControl">break-unless</span> color-is-blue? + ending-comment?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> ending-comment? + trace <span class="Constant">90</span>, <span class="Constant">[app]</span>, <span class="Constant">[switch color back to white]</span> + color<span class="Special"> <- </span>copy <span class="Constant">7/white</span> + <span class="muControl">jump</span> <span class="Constant">+exit:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># if color is white (no comments) and next character is '<', switch color to red</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> color-is-white? + starting-assignment?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">60/<</span> + <span class="muControl">break-unless</span> starting-assignment? + color<span class="Special"> <- </span>copy <span class="Constant">1/red</span> + <span class="muControl">jump</span> <span class="Constant">+exit:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># if color is red and next character is space, switch color to white</span> + <span class="Delimiter">{</span> + color-is-red?:boolean<span class="Special"> <- </span>equal color, <span class="Constant">1/red</span> + <span class="muControl">break-unless</span> color-is-red? + ending-assignment?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">32/space</span> + <span class="muControl">break-unless</span> ending-assignment? + color<span class="Special"> <- </span>copy <span class="Constant">7/white</span> + <span class="muControl">jump</span> <span class="Constant">+exit:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># otherwise no change</span> +<span class="Constant"> +exit</span> + <span class="muControl">reply</span> color +] + +<span class="muScenario">scenario</span> render-colors-assignment [ + assume-screen <span class="Constant">8/width</span>, <span class="Constant">5/height</span> + run [ + s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">d <- e</span> +<span class="Constant">f]</span> + new-editor s:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">8/right</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .d <- e .</span> + <span class="Constant"> .f .</span> + <span class="Constant"> . .</span> + ] + screen-should-contain-in-color <span class="Constant">1/red</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . <- .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/002-typing.mu.html b/html/edit/002-typing.mu.html new file mode 100644 index 00000000..787e3a4e --- /dev/null +++ b/html/edit/002-typing.mu.html @@ -0,0 +1,1092 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/002-typing.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muRecipe { color: #ff8700; } +.muData { color: #ffff00; } +.Special { color: #ff6060; } +.muScenario { color: #00af00; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## handling events from the keyboard, mouse, touch screen, ...</span> + +<span class="Comment"># temporary main: interactive editor</span> +<span class="Comment"># hit ctrl-c to exit</span> +<span class="muRecipe">recipe!</span> main [ + <span class="Constant">local-scope</span> + text:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + open-console + editor:address:editor-data<span class="Special"> <- </span>new-editor text, <span class="Constant">0/screen</span>, <span class="Constant">5/left</span>, <span class="Constant">45/right</span> + editor-event-loop <span class="Constant">0/screen</span>, <span class="Constant">0/console</span>, editor + close-console +] + +<span class="muRecipe">recipe</span> editor-event-loop [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + console:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Delimiter">{</span> + <span class="Comment"># looping over each (keyboard or touch) event as it occurs</span> +<span class="Constant"> +next-event</span> + cursor-row:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-column:offset</span> + screen<span class="Special"> <- </span>move-cursor screen, cursor-row, cursor-column + e:event, console:address, found?:boolean, quit?:boolean<span class="Special"> <- </span>read-event console + <span class="muControl">loop-unless</span> found? + <span class="muControl">break-if</span> quit? <span class="Comment"># only in tests</span> + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[next-event]</span> + <span class="Comment"># 'touch' event</span> + t:address:touch-event<span class="Special"> <- </span>maybe-convert e, <span class="Constant">touch:variant</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> t + move-cursor-in-editor screen, editor, *t + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># keyboard events</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> t + screen, editor, go-render?:boolean<span class="Special"> <- </span>handle-keyboard-event screen, editor, e + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> go-render? + screen<span class="Special"> <- </span>editor-render screen, editor + <span class="Delimiter">}</span> + <span class="Delimiter">}</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># process click, return if it was on current editor</span> +<span class="muRecipe">recipe</span> move-cursor-in-editor [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + t:touch-event<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">reply-unless</span> editor, <span class="Constant">0/false</span> + click-row:number<span class="Special"> <- </span>get t, <span class="Constant">row:offset</span> + <span class="muControl">reply-unless</span> click-row, <span class="Constant">0/false</span> <span class="Comment"># ignore clicks on 'menu'</span> + click-column:number<span class="Special"> <- </span>get t, <span class="Constant">column:offset</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + too-far-left?:boolean<span class="Special"> <- </span>lesser-than click-column, left + <span class="muControl">reply-if</span> too-far-left?, <span class="Constant">0/false</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + too-far-right?:boolean<span class="Special"> <- </span>greater-than click-column, right + <span class="muControl">reply-if</span> too-far-right?, <span class="Constant">0/false</span> + <span class="Comment"># position cursor</span> +<span class="Constant"> <move-cursor-begin></span> + editor<span class="Special"> <- </span>snap-cursor screen, editor, click-row, click-column + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + <span class="Comment"># gain focus</span> + <span class="muControl">reply</span> <span class="Constant">1/true</span> +] + +<span class="Comment"># editor <- snap-cursor screen:address, editor:address:editor-data, target-row:number, target-column:number</span> +<span class="Comment">#</span> +<span class="Comment"># Variant of 'render' that only moves the cursor (coordinates and</span> +<span class="Comment"># before-cursor). If it's past the end of a line, it 'slides' it left. If it's</span> +<span class="Comment"># past the last line it positions at end of last line.</span> +<span class="muRecipe">recipe</span> snap-cursor [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + target-row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + target-column:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">reply-unless</span> editor, <span class="Constant">1/top</span>, editor/same-as-ingredient:<span class="Constant">1</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + screen-height:number<span class="Special"> <- </span>screen-height screen + <span class="Comment"># count newlines until screen row</span> + curr:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + prev:address:duplex-list<span class="Special"> <- </span>copy curr <span class="Comment"># just in case curr becomes null and we can't compute prev-duplex</span> + curr<span class="Special"> <- </span>next-duplex curr + row:number<span class="Special"> <- </span>copy <span class="Constant">1/top</span> + column:number<span class="Special"> <- </span>copy left + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + *cursor-row<span class="Special"> <- </span>copy target-row + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + *cursor-column<span class="Special"> <- </span>copy target-column + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + <span class="Delimiter">{</span> +<span class="Constant"> +next-character</span> + <span class="muControl">break-unless</span> curr + off-screen?:boolean<span class="Special"> <- </span>greater-or-equal row, screen-height + <span class="muControl">break-if</span> off-screen? + <span class="Comment"># update editor-data.before-cursor</span> + <span class="Comment"># Doing so at the start of each iteration ensures it stays one step behind</span> + <span class="Comment"># the current character.</span> + <span class="Delimiter">{</span> + at-cursor-row?:boolean<span class="Special"> <- </span>equal row, *cursor-row + <span class="muControl">break-unless</span> at-cursor-row? + at-cursor?:boolean<span class="Special"> <- </span>equal column, *cursor-column + <span class="muControl">break-unless</span> at-cursor? + *before-cursor<span class="Special"> <- </span>copy prev + <span class="Delimiter">}</span> + c:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + <span class="Delimiter">{</span> + <span class="Comment"># newline? move to left rather than 0</span> + newline?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> newline? + <span class="Comment"># adjust cursor if necessary</span> + <span class="Delimiter">{</span> + at-cursor-row?:boolean<span class="Special"> <- </span>equal row, *cursor-row + <span class="muControl">break-unless</span> at-cursor-row? + left-of-cursor?:boolean<span class="Special"> <- </span>lesser-than column, *cursor-column + <span class="muControl">break-unless</span> left-of-cursor? + *cursor-column<span class="Special"> <- </span>copy column + *before-cursor<span class="Special"> <- </span>copy prev + <span class="Delimiter">}</span> + <span class="Comment"># skip to next line</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + column<span class="Special"> <- </span>copy left + curr<span class="Special"> <- </span>next-duplex curr + prev<span class="Special"> <- </span>next-duplex prev + <span class="muControl">loop</span> <span class="Constant">+next-character:label</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="Comment"># at right? wrap. even if there's only one more letter left; we need</span> + <span class="Comment"># room for clicking on the cursor after it.</span> + at-right?:boolean<span class="Special"> <- </span>equal column, right + <span class="muControl">break-unless</span> at-right? + column<span class="Special"> <- </span>copy left + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + <span class="Comment"># don't increment curr/prev</span> + <span class="muControl">loop</span> <span class="Constant">+next-character:label</span> + <span class="Delimiter">}</span> + curr<span class="Special"> <- </span>next-duplex curr + prev<span class="Special"> <- </span>next-duplex prev + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># is cursor to the right of the last line? move to end</span> + <span class="Delimiter">{</span> + at-cursor-row?:boolean<span class="Special"> <- </span>equal row, *cursor-row + cursor-outside-line?:boolean<span class="Special"> <- </span>lesser-or-equal column, *cursor-column + before-cursor-on-same-line?:boolean<span class="Special"> <- </span>and at-cursor-row?, cursor-outside-line? + above-cursor-row?:boolean<span class="Special"> <- </span>lesser-than row, *cursor-row + before-cursor?:boolean<span class="Special"> <- </span>or before-cursor-on-same-line?, above-cursor-row? + <span class="muControl">break-unless</span> before-cursor? + *cursor-row<span class="Special"> <- </span>copy row + *cursor-column<span class="Special"> <- </span>copy column + *before-cursor<span class="Special"> <- </span>copy prev + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">1</span> +] + +<span class="Comment"># screen, editor, go-render?:boolean <- handle-keyboard-event screen:address, editor:address:editor-data, e:event</span> +<span class="Comment"># Process an event 'e' and try to minimally update the screen.</span> +<span class="Comment"># Set 'go-render?' to true to indicate the caller must perform a non-minimal update.</span> +<span class="muRecipe">recipe</span> handle-keyboard-event [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + e:event<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">reply-unless</span> editor, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + screen-width:number<span class="Special"> <- </span>screen-width screen + screen-height:number<span class="Special"> <- </span>screen-height screen + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + save-row:number<span class="Special"> <- </span>copy *cursor-row + save-column:number<span class="Special"> <- </span>copy *cursor-column + <span class="Comment"># character</span> + <span class="Delimiter">{</span> + c:address:character<span class="Special"> <- </span>maybe-convert e, <span class="Constant">text:variant</span> + <span class="muControl">break-unless</span> c + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[handle-keyboard-event: special character]</span> + <span class="Comment"># exceptions for special characters go here</span> +<span class="Constant"> <handle-special-character></span> + <span class="Comment"># ignore any other special characters</span> + regular-character?:boolean<span class="Special"> <- </span>greater-or-equal *c, <span class="Constant">32/space</span> + <span class="muControl">reply-unless</span> regular-character?, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="Comment"># otherwise type it in</span> +<span class="Constant"> <insert-character-begin></span> + editor, screen, go-render?:boolean<span class="Special"> <- </span>insert-at-cursor editor, *c, screen +<span class="Constant"> <insert-character-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, go-render? + <span class="Delimiter">}</span> + <span class="Comment"># special key to modify the text or move the cursor</span> + k:address:number<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">keycode:variant</span> + assert k, <span class="Constant">[event was of unknown type; neither keyboard nor mouse]</span> + <span class="Comment"># handlers for each special key will go here</span> +<span class="Constant"> <handle-special-key></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> +] + +<span class="muRecipe">recipe</span> insert-at-cursor [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + c:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + insert-duplex c, *before-cursor + *before-cursor<span class="Special"> <- </span>next-duplex *before-cursor + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + save-row:number<span class="Special"> <- </span>copy *cursor-row + save-column:number<span class="Special"> <- </span>copy *cursor-column + screen-width:number<span class="Special"> <- </span>screen-width screen + screen-height:number<span class="Special"> <- </span>screen-height screen + <span class="Comment"># occasionally we'll need to mess with the cursor</span> +<span class="Constant"> <insert-character-special-case></span> + <span class="Comment"># but mostly we'll just move the cursor right</span> + *cursor-column<span class="Special"> <- </span>add *cursor-column, <span class="Constant">1</span> + next:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + <span class="Delimiter">{</span> + <span class="Comment"># at end of all text? no need to scroll? just print the character and leave</span> + at-end?:boolean<span class="Special"> <- </span>equal next, <span class="Constant">0/null</span> + <span class="muControl">break-unless</span> at-end? + bottom:number<span class="Special"> <- </span>subtract screen-height, <span class="Constant">1</span> + at-bottom?:boolean<span class="Special"> <- </span>equal save-row, bottom + at-right?:boolean<span class="Special"> <- </span>equal save-column, right + overflow?:boolean<span class="Special"> <- </span>and at-bottom?, at-right? + <span class="muControl">break-if</span> overflow? + move-cursor screen, save-row, save-column + print-character screen, c + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">2</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="Comment"># not at right margin? print the character and rest of line</span> + <span class="muControl">break-unless</span> next + at-right?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-column, screen-width + <span class="muControl">break-if</span> at-right? + curr:address:duplex-list<span class="Special"> <- </span>copy *before-cursor + move-cursor screen, save-row, save-column + curr-column:number<span class="Special"> <- </span>copy save-column + <span class="Delimiter">{</span> + <span class="Comment"># hit right margin? give up and let caller render</span> + at-right?:boolean<span class="Special"> <- </span>greater-than curr-column, right + <span class="muControl">reply-if</span> at-right?, editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">2</span>, <span class="Constant">1/go-render</span> + <span class="muControl">break-unless</span> curr + <span class="Comment"># newline? done.</span> + currc:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal currc, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + print-character screen, currc + curr-column<span class="Special"> <- </span>add curr-column, <span class="Constant">1</span> + curr<span class="Special"> <- </span>next-duplex curr + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">2</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">2</span>, <span class="Constant">1/go-render</span> +] + +<span class="Comment"># helper for tests</span> +<span class="muRecipe">recipe</span> editor-render [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + row:number, column:number<span class="Special"> <- </span>render screen, editor + clear-line-delimited screen, column, right + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + draw-horizontal screen, row, left, right, <span class="Constant">9480/horizontal-dotted</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + clear-screen-from screen, row, left, left, right +] + +<span class="muScenario">scenario</span> editor-handles-empty-event-queue [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console <span class="Constant">[]</span> + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-handles-mouse-clicks [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">1</span> <span class="Comment"># on the 'b'</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># cursor is at row 0..</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># ..and column 1</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-handles-mouse-clicks-outside-text [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">7</span> <span class="Comment"># last line, to the right of text</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># cursor column</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-handles-mouse-clicks-outside-text-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">7</span> <span class="Comment"># interior line, to the right of text</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># cursor column</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-handles-mouse-clicks-outside-text-3 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">7</span> <span class="Comment"># below text</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># cursor column</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-handles-mouse-clicks-outside-column [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Comment"># editor occupies only left half of screen</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + <span class="Comment"># click on right half of screen</span> + left-click <span class="Constant">3</span>, <span class="Constant">8</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># no change to cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># ..or column</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-handles-mouse-clicks-in-menu-area [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + <span class="Comment"># click on first, 'menu' row</span> + left-click <span class="Constant">0</span>, <span class="Constant">3</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># no change to cursor</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] +] + +<span class="muScenario">scenario</span> editor-inserts-characters-into-empty-editor [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + type <span class="Constant">[abc]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">3</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-inserts-characters-at-cursor [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># type two letters at different places</span> + assume-console [ + type <span class="Constant">[0]</span> + left-click <span class="Constant">1</span>, <span class="Constant">2</span> + type <span class="Constant">[d]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .0adbc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">7</span>, <span class="Constant">[print-character]</span> <span class="Comment"># 4 for first letter, 3 for second</span> +] + +<span class="muScenario">scenario</span> editor-inserts-characters-at-cursor-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">5</span> <span class="Comment"># right of last line</span> + type <span class="Constant">[d]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">1</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-inserts-characters-at-cursor-5 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">5</span> <span class="Comment"># right of non-last line</span> + type <span class="Constant">[e]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abce .</span> + <span class="Constant"> .d .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">1</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-inserts-characters-at-cursor-3 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">5</span> <span class="Comment"># below all text</span> + type <span class="Constant">[d]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">1</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-inserts-characters-at-cursor-4 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">5</span> <span class="Comment"># below all text</span> + type <span class="Constant">[e]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .de .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">1</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-inserts-characters-at-cursor-6 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">5</span> <span class="Comment"># below all text</span> + type <span class="Constant">[ef]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">2</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-after-inserting-characters [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + type <span class="Constant">[01]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .01ab .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># if the cursor reaches the right margin, wrap the line</span> + +<span class="muScenario">scenario</span> editor-wraps-line-on-insert [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># type a letter</span> + assume-console [ + type <span class="Constant">[e]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># no wrap yet</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .eabc .</span> +<span class="Constant"> .┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># type a second letter</span> + assume-console [ + type <span class="Constant">[f]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># now wrap</span> + screen-should-contain [ + <span class="Constant"> . .</span> +<span class="Constant"> .efab↩.</span> + <span class="Constant"> .c .</span> +<span class="Constant"> .┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-wraps-line-on-insert-2 [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdefg</span> +<span class="Constant">defg]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># type more text at the start</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">0</span> + type <span class="Constant">[abc]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor is not wrapped</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + <span class="Comment"># but line is wrapped</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .efg .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .efg .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><insert-character-special-case></span> [ + <span class="Comment"># if the line wraps at the cursor, move cursor to start of next row</span> + <span class="Delimiter">{</span> + <span class="Comment"># if we're at the column just before the wrap indicator</span> + wrap-column:number<span class="Special"> <- </span>subtract right, <span class="Constant">1</span> + at-wrap?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-column, wrap-column + <span class="muControl">break-unless</span> at-wrap? + *cursor-column<span class="Special"> <- </span>subtract *cursor-column, wrap-column + *cursor-column<span class="Special"> <- </span>add *cursor-column, left + *cursor-row<span class="Special"> <- </span>add *cursor-row, <span class="Constant">1</span> + <span class="Comment"># if we're out of the screen, scroll down</span> + <span class="Delimiter">{</span> + below-screen?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-row, screen-height + <span class="muControl">break-unless</span> below-screen? +<span class="Constant"> <scroll-down></span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">2</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-wraps-cursor-after-inserting-characters [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcde]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">4</span> <span class="Comment"># line is full; no wrap icon yet</span> + type <span class="Constant">[f]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .fe .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># cursor column</span> + ] +] + +<span class="muScenario">scenario</span> editor-wraps-cursor-after-inserting-characters-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcde]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> <span class="Comment"># right before the wrap icon</span> + type <span class="Constant">[f]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcf↩ .</span> + <span class="Constant"> .de .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># cursor column</span> + ] +] + +<span class="muScenario">scenario</span> editor-wraps-cursor-to-left-margin [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcde]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">2/left</span>, <span class="Constant">7/right</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">5</span> <span class="Comment"># line is full; no wrap icon yet</span> + type <span class="Constant">[01]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . abc0↩ .</span> + <span class="Constant"> . 1de .</span> + <span class="Constant"> . ┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># cursor column</span> + ] +] + +<span class="Comment"># if newline, move cursor to start of next line, and maybe align indent with previous line</span> + +<span class="muData">container</span> editor-data [ + indent?:boolean +] + +<span class="muRecipe">after</span> <span class="Constant"><editor-initialization></span> [ + indent?:address:boolean<span class="Special"> <- </span>get-address *result, <span class="Constant">indent?:offset</span> + *indent?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-down-after-inserting-newline [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + assume-console [ + type <span class="Constant">[0</span> +<span class="Constant">1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .0 .</span> + <span class="Constant"> .1abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + newline?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> newline? +<span class="Constant"> <insert-enter-begin></span> + editor<span class="Special"> <- </span>insert-new-line-and-indent editor, screen +<span class="Constant"> <insert-enter-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> insert-new-line-and-indent [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + screen-height:number<span class="Special"> <- </span>screen-height screen + <span class="Comment"># insert newline</span> + insert-duplex <span class="Constant">10/newline</span>, *before-cursor + *before-cursor<span class="Special"> <- </span>next-duplex *before-cursor + *cursor-row<span class="Special"> <- </span>add *cursor-row, <span class="Constant">1</span> + *cursor-column<span class="Special"> <- </span>copy left + <span class="Comment"># maybe scroll</span> + <span class="Delimiter">{</span> + below-screen?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-row, screen-height <span class="Comment"># must be equal, never greater</span> + <span class="muControl">break-unless</span> below-screen? +<span class="Constant"> <scroll-down></span> + *cursor-row<span class="Special"> <- </span>subtract *cursor-row, <span class="Constant">1</span> <span class="Comment"># bring back into screen range</span> + <span class="Delimiter">}</span> + <span class="Comment"># indent if necessary</span> + indent?:boolean<span class="Special"> <- </span>get *editor, <span class="Constant">indent?:offset</span> + <span class="muControl">reply-unless</span> indent?, editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span> + d:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span> + end-of-previous-line:address:duplex-list<span class="Special"> <- </span>prev-duplex *before-cursor + indent:number<span class="Special"> <- </span>line-indent end-of-previous-line, d + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + indent-done?:boolean<span class="Special"> <- </span>greater-or-equal i, indent + <span class="muControl">break-if</span> indent-done? + editor, screen, go-render?:boolean<span class="Special"> <- </span>insert-at-cursor editor, <span class="Constant">32/space</span>, screen + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span> +] + +<span class="Comment"># takes a pointer 'curr' into the doubly-linked list and its sentinel, counts</span> +<span class="Comment"># the number of spaces at the start of the line containing 'curr'.</span> +<span class="muRecipe">recipe</span> line-indent [ + <span class="Constant">local-scope</span> + curr:address:duplex-list<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + start:address:duplex-list<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + result:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="muControl">reply-unless</span> curr, result + at-start?:boolean<span class="Special"> <- </span>equal curr, start + <span class="muControl">reply-if</span> at-start?, result + <span class="Delimiter">{</span> + curr<span class="Special"> <- </span>prev-duplex curr + <span class="muControl">break-unless</span> curr + at-start?:boolean<span class="Special"> <- </span>equal curr, start + <span class="muControl">break-if</span> at-start? + c:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + <span class="Comment"># if c is a space, increment result</span> + is-space?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">32/space</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> is-space? + result<span class="Special"> <- </span>add result, <span class="Constant">1</span> + <span class="Delimiter">}</span> + <span class="Comment"># if c is not a space, reset result</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> is-space? + result<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">}</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> result +] + +<span class="muScenario">scenario</span> editor-moves-cursor-down-after-inserting-newline-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">1/left</span>, <span class="Constant">10/right</span> + assume-console [ + type <span class="Constant">[0</span> +<span class="Constant">1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . 0 .</span> + <span class="Constant"> . 1abc .</span> + <span class="Constant"> . ┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-clears-previous-line-completely-after-inserting-newline [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcde]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + assume-console [ + press enter + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .e .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># line should be fully cleared</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .e .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + ] +] + +<span class="muScenario">scenario</span> editor-inserts-indent-after-newline [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">10/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab</span> +<span class="Constant"> cd</span> +<span class="Constant">ef]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># position cursor after 'cd' and hit 'newline'</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">8</span> + type [ +] + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor should be below start of previous line</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># cursor column (indented)</span> + ] +] + +<span class="muScenario">scenario</span> editor-skips-indent-around-paste [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">10/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab</span> +<span class="Constant"> cd</span> +<span class="Constant">ef]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># position cursor after 'cd' and hit 'newline' surrounded by paste markers</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">8</span> + press <span class="Constant">65507</span> <span class="Comment"># start paste</span> + press enter + press <span class="Constant">65506</span> <span class="Comment"># end paste</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor should be below start of previous line</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># cursor row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># cursor column (not indented)</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + paste-start?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65507/paste-start</span> + <span class="muControl">break-unless</span> paste-start? + indent?:address:boolean<span class="Special"> <- </span>get-address *editor, <span class="Constant">indent?:offset</span> + *indent?<span class="Special"> <- </span>copy <span class="Constant">0/false</span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + paste-end?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65506/paste-end</span> + <span class="muControl">break-unless</span> paste-end? + indent?:address:boolean<span class="Special"> <- </span>get-address *editor, <span class="Constant">indent?:offset</span> + *indent?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="SalientComment">## helpers</span> + +<span class="muRecipe">recipe</span> draw-horizontal [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + x:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + style:character, style-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> style-found? + style<span class="Special"> <- </span>copy <span class="Constant">9472/horizontal</span> + <span class="Delimiter">}</span> + color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Delimiter">{</span> + <span class="Comment"># default color to white</span> + <span class="muControl">break-if</span> color-found? + color<span class="Special"> <- </span>copy <span class="Constant">245/grey</span> + <span class="Delimiter">}</span> + bg-color:number, bg-color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> bg-color-found? + bg-color<span class="Special"> <- </span>copy <span class="Constant">0/black</span> + <span class="Delimiter">}</span> + screen<span class="Special"> <- </span>move-cursor screen, row, x + <span class="Delimiter">{</span> + continue?:boolean<span class="Special"> <- </span>lesser-or-equal x, right <span class="Comment"># right is inclusive, to match editor-data semantics</span> + <span class="muControl">break-unless</span> continue? + print-character screen, style, color, bg-color + x<span class="Special"> <- </span>add x, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/003-shortcuts.mu.html b/html/edit/003-shortcuts.mu.html new file mode 100644 index 00000000..82273ba7 --- /dev/null +++ b/html/edit/003-shortcuts.mu.html @@ -0,0 +1,3107 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/003-shortcuts.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muScenario { color: #00af00; } +.Special { color: #ff6060; } +.muRecipe { color: #ff8700; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## special shortcuts for manipulating the editor</span> +<span class="Comment"># Some keys on the keyboard generate unicode characters, others generate</span> +<span class="Comment"># terminfo key codes. We need to modify different places in the two cases.</span> + +<span class="Comment"># tab - insert two spaces</span> + +<span class="muScenario">scenario</span> editor-inserts-two-spaces-on-tab [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># just one character in final line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab</span> +<span class="Constant">cd]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + assume-console [ + press tab + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . ab .</span> + <span class="Constant"> .cd .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + tab?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">9/tab</span> + <span class="muControl">break-unless</span> tab? +<span class="Constant"> <insert-character-begin></span> + editor, screen, go-render?:boolean<span class="Special"> <- </span>insert-at-cursor editor, <span class="Constant">32/space</span>, screen + editor, screen, go-render?:boolean<span class="Special"> <- </span>insert-at-cursor editor, <span class="Constant">32/space</span>, screen +<span class="Constant"> <insert-character-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># backspace - delete character before cursor</span> + +<span class="muScenario">scenario</span> editor-handles-backspace-key [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">1</span> + press backspace + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .bc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">3</span>, <span class="Constant">[print-character]</span> <span class="Comment"># length of original line to overwrite</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + delete-previous-character?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">8/backspace</span> + <span class="muControl">break-unless</span> delete-previous-character? +<span class="Constant"> <backspace-character-begin></span> + editor, screen, go-render?:boolean, backspaced-cell:address:duplex-list<span class="Special"> <- </span>delete-before-cursor editor, screen +<span class="Constant"> <backspace-character-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, go-render? + <span class="Delimiter">}</span> +] + +<span class="Comment"># editor, screen, go-render?:boolean, backspaced-cell:address:duplex-list <- delete-before-cursor editor:address:editor-data, screen</span> +<span class="Comment"># return values:</span> +<span class="Comment"># go-render? - whether caller needs to update the screen</span> +<span class="Comment"># backspaced-cell - value deleted (or 0 if nothing was deleted) so we can save it for undo, etc.</span> +<span class="muRecipe">recipe</span> delete-before-cursor [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + <span class="Comment"># if at start of text (before-cursor at § sentinel), return</span> + prev:address:duplex-list<span class="Special"> <- </span>prev-duplex *before-cursor + <span class="muControl">reply-unless</span> prev, editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span>, <span class="Constant">0/nothing-deleted</span> + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[delete-before-cursor]</span> + original-row:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-row:offset</span> + editor, scroll?:boolean<span class="Special"> <- </span>move-cursor-coordinates-left editor + backspaced-cell:address:duplex-list<span class="Special"> <- </span>copy *before-cursor + remove-duplex *before-cursor <span class="Comment"># will also neatly trim next/prev pointers in backspaced-cell/*before-cursor</span> + *before-cursor<span class="Special"> <- </span>copy prev + <span class="muControl">reply-if</span> scroll?, editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">1/go-render</span>, backspaced-cell + screen-width:number<span class="Special"> <- </span>screen-width screen + cursor-row:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-column:offset</span> + <span class="Comment"># did we just backspace over a newline?</span> + same-row?:boolean<span class="Special"> <- </span>equal cursor-row, original-row + <span class="muControl">reply-unless</span> same-row?, editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span>, backspaced-cell + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + curr:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + screen<span class="Special"> <- </span>move-cursor screen, cursor-row, cursor-column + curr-column:number<span class="Special"> <- </span>copy cursor-column + <span class="Delimiter">{</span> + <span class="Comment"># hit right margin? give up and let caller render</span> + at-right?:boolean<span class="Special"> <- </span>greater-or-equal curr-column, screen-width + <span class="muControl">reply-if</span> at-right?, editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span>, backspaced-cell + <span class="muControl">break-unless</span> curr + <span class="Comment"># newline? done.</span> + currc:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal currc, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + screen<span class="Special"> <- </span>print-character screen, currc + curr-column<span class="Special"> <- </span>add curr-column, <span class="Constant">1</span> + curr<span class="Special"> <- </span>next-duplex curr + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># we're guaranteed not to be at the right margin</span> + screen<span class="Special"> <- </span>print-character screen, <span class="Constant">32/space</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span>, backspaced-cell +] + +<span class="muRecipe">recipe</span> move-cursor-coordinates-left [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + before-cursor:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">before-cursor:offset</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + <span class="Comment"># if not at left margin, move one character left</span> + <span class="Delimiter">{</span> + at-left-margin?:boolean<span class="Special"> <- </span>equal *cursor-column, left + <span class="muControl">break-if</span> at-left-margin? + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[decrementing cursor column]</span> + *cursor-column<span class="Special"> <- </span>subtract *cursor-column, <span class="Constant">1</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> + <span class="Comment"># if at left margin, we must move to previous row:</span> + top-of-screen?:boolean<span class="Special"> <- </span>equal *cursor-row, <span class="Constant">1</span> <span class="Comment"># exclude menu bar</span> + go-render?:boolean<span class="Special"> <- </span>copy <span class="Constant">0/false</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> top-of-screen? + *cursor-row<span class="Special"> <- </span>subtract *cursor-row, <span class="Constant">1</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> top-of-screen? +<span class="Constant"> <scroll-up></span> + go-render?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="Comment"># case 1: if previous character was newline, figure out how long the previous line is</span> + previous-character:character<span class="Special"> <- </span>get *before-cursor, <span class="Constant">value:offset</span> + previous-character-is-newline?:boolean<span class="Special"> <- </span>equal previous-character, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> previous-character-is-newline? + <span class="Comment"># compute length of previous line</span> + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[switching to previous line]</span> + d:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span> + end-of-line:number<span class="Special"> <- </span>previous-line-length before-cursor, d + *cursor-column<span class="Special"> <- </span>add left, end-of-line + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, go-render? + <span class="Delimiter">}</span> + <span class="Comment"># case 2: if previous-character was not newline, we're just at a wrapped line</span> + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[wrapping to previous line]</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + *cursor-column<span class="Special"> <- </span>subtract right, <span class="Constant">1</span> <span class="Comment"># leave room for wrap icon</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, go-render? +] + +<span class="Comment"># takes a pointer 'curr' into the doubly-linked list and its sentinel, counts</span> +<span class="Comment"># the length of the previous line before the 'curr' pointer.</span> +<span class="muRecipe">recipe</span> previous-line-length [ + <span class="Constant">local-scope</span> + curr:address:duplex-list<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + start:address:duplex-list<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + result:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="muControl">reply-unless</span> curr, result + at-start?:boolean<span class="Special"> <- </span>equal curr, start + <span class="muControl">reply-if</span> at-start?, result + <span class="Delimiter">{</span> + curr<span class="Special"> <- </span>prev-duplex curr + <span class="muControl">break-unless</span> curr + at-start?:boolean<span class="Special"> <- </span>equal curr, start + <span class="muControl">break-if</span> at-start? + c:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + result<span class="Special"> <- </span>add result, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> result +] + +<span class="muScenario">scenario</span> editor-clears-last-line-on-backspace [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># just one character in final line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab</span> +<span class="Constant">cd]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">0</span> <span class="Comment"># cursor at only character in final line</span> + press backspace + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">2</span> + ] +] + +<span class="Comment"># delete - delete character at cursor</span> + +<span class="muScenario">scenario</span> editor-handles-delete-key [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + press delete + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .bc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">3</span>, <span class="Constant">[print-character]</span> <span class="Comment"># length of original line to overwrite</span> +<span class="Constant"> $clear-trace</span> + assume-console [ + press delete + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">2</span>, <span class="Constant">[print-character]</span> <span class="Comment"># new length to overwrite</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + delete-next-character?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65522/delete</span> + <span class="muControl">break-unless</span> delete-next-character? +<span class="Constant"> <delete-character-begin></span> + editor, screen, go-render?:boolean, deleted-cell:address:duplex-list<span class="Special"> <- </span>delete-at-cursor editor, screen +<span class="Constant"> <delete-character-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, go-render? + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> delete-at-cursor [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + candidate:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + <span class="muControl">reply-unless</span> candidate, editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span>, <span class="Constant">0/nothing-deleted</span> + currc:character<span class="Special"> <- </span>get *candidate, <span class="Constant">value:offset</span> + remove-duplex candidate + deleted-newline?:boolean<span class="Special"> <- </span>equal currc, <span class="Constant">10/newline</span> + <span class="muControl">reply-if</span> deleted-newline?, editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span>, candidate/deleted-cell + <span class="Comment"># wasn't a newline? render rest of line</span> + curr:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor <span class="Comment"># refresh after remove-duplex above</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + screen<span class="Special"> <- </span>move-cursor screen, *cursor-row, *cursor-column + curr-column:number<span class="Special"> <- </span>copy *cursor-column + screen-width:number<span class="Special"> <- </span>screen-width screen + <span class="Delimiter">{</span> + <span class="Comment"># hit right margin? give up and let caller render</span> + at-right?:boolean<span class="Special"> <- </span>greater-or-equal curr-column, screen-width + <span class="muControl">reply-if</span> at-right?, editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span>, candidate/deleted-cell + <span class="muControl">break-unless</span> curr + <span class="Comment"># newline? done.</span> + currc:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal currc, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + screen<span class="Special"> <- </span>print-character screen, currc + curr-column<span class="Special"> <- </span>add curr-column, <span class="Constant">1</span> + curr<span class="Special"> <- </span>next-duplex curr + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># we're guaranteed not to be at the right margin</span> + screen<span class="Special"> <- </span>print-character screen, <span class="Constant">32/space</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span>, candidate/deleted-cell +] + +<span class="Comment"># right arrow</span> + +<span class="muScenario">scenario</span> editor-moves-cursor-right-with-key [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + press right-arrow + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a0bc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">3</span>, <span class="Constant">[print-character]</span> <span class="Comment"># 0 and following characters</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + move-to-next-character?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65514/right-arrow</span> + <span class="muControl">break-unless</span> move-to-next-character? + <span class="Comment"># if not at end of text</span> + next-cursor:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + <span class="muControl">break-unless</span> next-cursor + <span class="Comment"># scan to next character</span> +<span class="Constant"> <move-cursor-begin></span> + *before-cursor<span class="Special"> <- </span>copy next-cursor + editor, go-render?:boolean<span class="Special"> <- </span>move-cursor-coordinates-right editor, screen-height + screen<span class="Special"> <- </span>move-cursor screen, *cursor-row, *cursor-column + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">2/right-arrow</span> +<span class="Constant"> <move-cursor-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, go-render? + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> move-cursor-coordinates-right [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen-height:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + before-cursor:address:duplex-list<span class="Special"> <- </span>get *editor <span class="Constant">before-cursor:offset</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + <span class="Comment"># if crossed a newline, move cursor to start of next row</span> + <span class="Delimiter">{</span> + old-cursor-character:character<span class="Special"> <- </span>get *before-cursor, <span class="Constant">value:offset</span> + was-at-newline?:boolean<span class="Special"> <- </span>equal old-cursor-character, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> was-at-newline? + *cursor-row<span class="Special"> <- </span>add *cursor-row, <span class="Constant">1</span> + *cursor-column<span class="Special"> <- </span>copy left + below-screen?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-row, screen-height <span class="Comment"># must be equal</span> + <span class="muControl">reply-unless</span> below-screen?, editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> +<span class="Constant"> <scroll-down></span> + *cursor-row<span class="Special"> <- </span>subtract *cursor-row, <span class="Constant">1</span> <span class="Comment"># bring back into screen range</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> + <span class="Comment"># if the line wraps, move cursor to start of next row</span> + <span class="Delimiter">{</span> + <span class="Comment"># if we're at the column just before the wrap indicator</span> + wrap-column:number<span class="Special"> <- </span>subtract right, <span class="Constant">1</span> + at-wrap?:boolean<span class="Special"> <- </span>equal *cursor-column, wrap-column + <span class="muControl">break-unless</span> at-wrap? + <span class="Comment"># and if next character isn't newline</span> + next:address:duplex-list<span class="Special"> <- </span>next-duplex before-cursor + <span class="muControl">break-unless</span> next + next-character:character<span class="Special"> <- </span>get *next, <span class="Constant">value:offset</span> + newline?:boolean<span class="Special"> <- </span>equal next-character, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> newline? + *cursor-row<span class="Special"> <- </span>add *cursor-row, <span class="Constant">1</span> + *cursor-column<span class="Special"> <- </span>copy left + below-screen?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-row, screen-height <span class="Comment"># must be equal</span> + <span class="muControl">reply-unless</span> below-screen?, editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> +<span class="Constant"> <scroll-down></span> + *cursor-row<span class="Special"> <- </span>subtract *cursor-row, <span class="Constant">1</span> <span class="Comment"># bring back into screen range</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> + <span class="Comment"># otherwise move cursor one character right</span> + *cursor-column<span class="Special"> <- </span>add *cursor-column, <span class="Constant">1</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-next-line-with-right-arrow [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># type right-arrow a few times to get to start of second line</span> + assume-console [ + press right-arrow + press right-arrow + press right-arrow + press right-arrow <span class="Comment"># next line</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + <span class="Comment"># type something and ensure it goes where it should</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .0d .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">2</span>, <span class="Constant">[print-character]</span> <span class="Comment"># new length of second line</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-next-line-with-right-arrow-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">1/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + press right-arrow + press right-arrow + press right-arrow + press right-arrow <span class="Comment"># next line</span> + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . abc .</span> + <span class="Constant"> . 0d .</span> + <span class="Constant"> . ┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-next-wrapped-line-with-right-arrow [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdef]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> + press right-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .ef .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-next-wrapped-line-with-right-arrow-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># line just barely wrapping</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcde]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># position cursor at last character before wrap and hit right-arrow</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> + press right-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + <span class="Comment"># now hit right arrow again</span> + assume-console [ + press right-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-next-wrapped-line-with-right-arrow-3 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdef]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">1/left</span>, <span class="Constant">6/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">4</span> + press right-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . abcd↩ .</span> + <span class="Constant"> . ef .</span> + <span class="Constant"> . ┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-next-line-with-right-arrow-at-end-of-line [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># move to end of line, press right-arrow, type a character</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> + press right-arrow + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># new character should be in next line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .0d .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">2</span>, <span class="Constant">[print-character]</span> +] + +<span class="Comment"># todo: ctrl-right: next word-end</span> + +<span class="Comment"># left arrow</span> + +<span class="muScenario">scenario</span> editor-moves-cursor-left-with-key [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">2</span> + press left-arrow + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a0bc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">3</span>, <span class="Constant">[print-character]</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + move-to-previous-character?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65515/left-arrow</span> + <span class="muControl">break-unless</span> move-to-previous-character? + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[left arrow]</span> + <span class="Comment"># if not at start of text (before-cursor at § sentinel)</span> + prev:address:duplex-list<span class="Special"> <- </span>prev-duplex *before-cursor + <span class="muControl">reply-unless</span> prev, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> +<span class="Constant"> <move-cursor-begin></span> + editor, go-render?<span class="Special"> <- </span>move-cursor-coordinates-left editor + *before-cursor<span class="Special"> <- </span>copy prev + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">1/left-arrow</span> +<span class="Constant"> <move-cursor-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, go-render? + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># initialize editor with two lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># position cursor at start of second line (so there's no previous newline)</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">0</span> + press left-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># initialize editor with three lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">g]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># position cursor further down (so there's a newline before the character at</span> + <span class="Comment"># the cursor)</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">0</span> + press left-arrow + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .def0 .</span> + <span class="Constant"> .g .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] + check-trace-count-for-label <span class="Constant">1</span>, <span class="Constant">[print-character]</span> <span class="Comment"># just the '0'</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-3 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">g]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># position cursor at start of text, press left-arrow, then type a character</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">0</span> + press left-arrow + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># left-arrow should have had no effect</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .0abc .</span> + <span class="Constant"> .def .</span> + <span class="Constant"> .g .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] + check-trace-count-for-label <span class="Constant">4</span>, <span class="Constant">[print-character]</span> <span class="Comment"># length of first line</span> +] + +<span class="muScenario">scenario</span> editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-4 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># initialize editor with text containing an empty line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + +d] + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># position cursor right after empty line</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">0</span> + press left-arrow + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .0 .</span> + <span class="Constant"> .d .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] + check-trace-count-for-label <span class="Constant">1</span>, <span class="Constant">[print-character]</span> <span class="Comment"># just the '0'</span> +] + +<span class="muScenario">scenario</span> editor-moves-across-screen-lines-across-wrap-with-left-arrow [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># initialize editor with text containing an empty line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdef]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .ef .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># position cursor right after empty line</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">0</span> + press left-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Comment"># previous row</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> <span class="Comment"># end of wrapped line</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="Comment"># todo: ctrl-left: previous word-start</span> + +<span class="Comment"># up arrow</span> + +<span class="muScenario">scenario</span> editor-moves-to-previous-line-with-up-arrow [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a0bc .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + move-to-previous-line?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65517/up-arrow</span> + <span class="muControl">break-unless</span> move-to-previous-line? +<span class="Constant"> <move-cursor-begin></span> + editor, go-render?<span class="Special"> <- </span>move-to-previous-line editor + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">3/up-arrow</span> +<span class="Constant"> <move-cursor-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, go-render? + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> move-to-previous-line [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + already-at-top?:boolean<span class="Special"> <- </span>lesser-or-equal *cursor-row, <span class="Constant">1/top</span> + <span class="Delimiter">{</span> + <span class="Comment"># if cursor not at top, move it</span> + <span class="muControl">break-if</span> already-at-top? + <span class="Comment"># if not at newline, move to start of line (previous newline)</span> + <span class="Comment"># then scan back another line</span> + <span class="Comment"># if either step fails, give up without modifying cursor or coordinates</span> + curr:address:duplex-list<span class="Special"> <- </span>copy *before-cursor + <span class="Delimiter">{</span> + old:address:duplex-list<span class="Special"> <- </span>copy curr + c2:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal c2, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + curr:address:duplex-list<span class="Special"> <- </span>before-previous-line curr, editor + no-motion?:boolean<span class="Special"> <- </span>equal curr, old + <span class="muControl">reply-if</span> no-motion?, editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + old<span class="Special"> <- </span>copy curr + curr<span class="Special"> <- </span>before-previous-line curr, editor + no-motion?:boolean<span class="Special"> <- </span>equal curr, old + <span class="muControl">reply-if</span> no-motion?, editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> + *before-cursor<span class="Special"> <- </span>copy curr + *cursor-row<span class="Special"> <- </span>subtract *cursor-row, <span class="Constant">1</span> + <span class="Comment"># scan ahead to right column or until end of line</span> + target-column:number<span class="Special"> <- </span>copy *cursor-column + *cursor-column<span class="Special"> <- </span>copy left + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-column, target-column + <span class="muControl">break-if</span> done? + curr:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + <span class="muControl">break-unless</span> curr + currc:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal currc, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + <span class="Comment">#</span> + *before-cursor<span class="Special"> <- </span>copy curr + *cursor-column<span class="Special"> <- </span>add *cursor-column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="Comment"># if cursor already at top, scroll up</span> + <span class="muControl">break-unless</span> already-at-top? +<span class="Constant"> <scroll-up></span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-adjusts-column-at-previous-line [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ab</span> +<span class="Constant">def]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">3</span> + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .ab0 .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-adjusts-column-at-empty-line [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new [ +def] + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">3</span> + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .0 .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-moves-to-previous-line-from-left-margin [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># start out with three lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># click on the third line and hit up-arrow, so you end up just after a newline</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">0</span> + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .0def .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="Comment"># down arrow</span> + +<span class="muScenario">scenario</span> editor-moves-to-next-line-with-down-arrow [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># cursor starts out at (1, 0)</span> + assume-console [ + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># ..and ends at (2, 0)</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .0def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + move-to-next-line?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65516/down-arrow</span> + <span class="muControl">break-unless</span> move-to-next-line? +<span class="Constant"> <move-cursor-begin></span> + editor, go-render?<span class="Special"> <- </span>move-to-next-line editor, screen-height + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">4/down-arrow</span> +<span class="Constant"> <move-cursor-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, go-render? + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> move-to-next-line [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen-height:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-row:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + last-line:number<span class="Special"> <- </span>subtract screen-height, <span class="Constant">1</span> + already-at-bottom?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-row, last-line + <span class="Delimiter">{</span> + <span class="Comment"># if cursor not at bottom, move it</span> + <span class="muControl">break-if</span> already-at-bottom? + <span class="Comment"># scan to start of next line, then to right column or until end of line</span> + max:number<span class="Special"> <- </span>subtract right, left + next-line:address:duplex-list<span class="Special"> <- </span>before-start-of-next-line *before-cursor, max + <span class="Delimiter">{</span> + <span class="Comment"># already at end of buffer? try to scroll up (so we can see more</span> + <span class="Comment"># warnings or sandboxes below)</span> + no-motion?:boolean<span class="Special"> <- </span>equal next-line, *before-cursor + <span class="muControl">break-unless</span> no-motion? + scroll?:boolean<span class="Special"> <- </span>greater-than *cursor-row, <span class="Constant">1</span> + <span class="muControl">break-if</span> scroll?, <span class="Constant">+try-to-scroll:label</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> + *cursor-row<span class="Special"> <- </span>add *cursor-row, <span class="Constant">1</span> + *before-cursor<span class="Special"> <- </span>copy next-line + target-column:number<span class="Special"> <- </span>copy *cursor-column + *cursor-column<span class="Special"> <- </span>copy left + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal *cursor-column, target-column + <span class="muControl">break-if</span> done? + curr:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + <span class="muControl">break-unless</span> curr + currc:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal currc, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + <span class="Comment">#</span> + *before-cursor<span class="Special"> <- </span>copy curr + *cursor-column<span class="Special"> <- </span>add *cursor-column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> +<span class="Constant"> +try-to-scroll</span> +<span class="Constant"> <scroll-down></span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">1/go-render</span> +] + +<span class="muScenario">scenario</span> editor-adjusts-column-at-next-line [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">de]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .de0 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-scrolls-at-end-on-down-arrow [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">de]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># try to move down past end of text</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">0</span> + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen should scroll, moving cursor to end of text</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .de0 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># try to move down again</span> +<span class="Constant"> $clear-trace</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">0</span> + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen stops scrolling because cursor is already at top</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .de01 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># ctrl-a/home - move cursor to start of line</span> + +<span class="muScenario">scenario</span> editor-moves-to-start-of-line-with-ctrl-a [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># start on second line, press ctrl-a</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">3</span> + press ctrl-a + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to start of line</span> + memory-should-contain [ + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + move-to-start-of-line?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">1/ctrl-a</span> + <span class="muControl">break-unless</span> move-to-start-of-line? +<span class="Constant"> <move-cursor-begin></span> + move-to-start-of-line editor + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + move-to-start-of-line?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65521/home</span> + <span class="muControl">break-unless</span> move-to-start-of-line? +<span class="Constant"> <move-cursor-begin></span> + move-to-start-of-line editor + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> move-to-start-of-line [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># update cursor column</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + *cursor-column<span class="Special"> <- </span>copy left + <span class="Comment"># update before-cursor</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + init:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span> + <span class="Comment"># while not at start of line, move </span> + <span class="Delimiter">{</span> + at-start-of-text?:boolean<span class="Special"> <- </span>equal *before-cursor, init + <span class="muControl">break-if</span> at-start-of-text? + prev:character<span class="Special"> <- </span>get **before-cursor, <span class="Constant">value:offset</span> + at-start-of-line?:boolean<span class="Special"> <- </span>equal prev, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-start-of-line? + *before-cursor<span class="Special"> <- </span>prev-duplex *before-cursor + assert *before-cursor, <span class="Constant">[move-to-start-of-line tried to move before start of text]</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-moves-to-start-of-line-with-ctrl-a-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># start on first line (no newline before), press ctrl-a</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> + press ctrl-a + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to start of line</span> + memory-should-contain [ + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-to-start-of-line-with-home [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> +<span class="Constant"> $clear-trace</span> + <span class="Comment"># start on second line, press 'home'</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">3</span> + press home + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to start of line</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-to-start-of-line-with-home-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># start on first line (no newline before), press 'home'</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> + press home + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to start of line</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="Comment"># ctrl-e/end - move cursor to end of line</span> + +<span class="muScenario">scenario</span> editor-moves-to-end-of-line-with-ctrl-e [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># start on first line, press ctrl-e</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">1</span> + press ctrl-e + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to end of line</span> + memory-should-contain [ + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> + <span class="Comment"># editor inserts future characters at cursor</span> + assume-console [ + type <span class="Constant">[z]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">4</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .123z .</span> + <span class="Constant"> .456 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + check-trace-count-for-label <span class="Constant">1</span>, <span class="Constant">[print-character]</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + move-to-end-of-line?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">5/ctrl-e</span> + <span class="muControl">break-unless</span> move-to-end-of-line? +<span class="Constant"> <move-cursor-begin></span> + move-to-end-of-line editor + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + move-to-end-of-line?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65520/end</span> + <span class="muControl">break-unless</span> move-to-end-of-line? +<span class="Constant"> <move-cursor-begin></span> + move-to-end-of-line editor + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> move-to-end-of-line [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + <span class="Comment"># while not at start of line, move </span> + <span class="Delimiter">{</span> + next:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + <span class="muControl">break-unless</span> next <span class="Comment"># end of text</span> + nextc:character<span class="Special"> <- </span>get *next, <span class="Constant">value:offset</span> + at-end-of-line?:boolean<span class="Special"> <- </span>equal nextc, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-end-of-line? + *before-cursor<span class="Special"> <- </span>copy next + *cursor-column<span class="Special"> <- </span>add *cursor-column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-moves-to-end-of-line-with-ctrl-e-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># start on second line (no newline after), press ctrl-e</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press ctrl-e + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to end of line</span> + memory-should-contain [ + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-to-end-of-line-with-end [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># start on first line, press 'end'</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">1</span> + press end + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to end of line</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="muScenario">scenario</span> editor-moves-to-end-of-line-with-end-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data +<span class="Constant"> $clear-trace</span> + <span class="Comment"># start on second line (no newline after), press 'end'</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press end + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to end of line</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + check-trace-count-for-label <span class="Constant">0</span>, <span class="Constant">[print-character]</span> +] + +<span class="Comment"># ctrl-u - delete text from start of line until (but not at) cursor</span> + +<span class="muScenario">scenario</span> editor-deletes-to-start-of-line-with-ctrl-u [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start on second line, press ctrl-u</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">2</span> + press ctrl-u + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes to start of line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .123 .</span> + <span class="Constant"> .6 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + delete-to-start-of-line?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">21/ctrl-u</span> + <span class="muControl">break-unless</span> delete-to-start-of-line? +<span class="Constant"> <delete-to-start-of-line-begin></span> + deleted-cells:address:duplex-list<span class="Special"> <- </span>delete-to-start-of-line editor +<span class="Constant"> <delete-to-start-of-line-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> delete-to-start-of-line [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># compute range to delete</span> + init:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + start:address:duplex-list<span class="Special"> <- </span>copy *before-cursor + end:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + <span class="Delimiter">{</span> + at-start-of-text?:boolean<span class="Special"> <- </span>equal start, init + <span class="muControl">break-if</span> at-start-of-text? + curr:character<span class="Special"> <- </span>get *start, <span class="Constant">value:offset</span> + at-start-of-line?:boolean<span class="Special"> <- </span>equal curr, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-start-of-line? + start<span class="Special"> <- </span>prev-duplex start + assert start, <span class="Constant">[delete-to-start-of-line tried to move before start of text]</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># snip it out</span> + result:address:duplex-list<span class="Special"> <- </span>next-duplex start + remove-duplex-between start, end + <span class="Comment"># adjust cursor</span> + *before-cursor<span class="Special"> <- </span>prev-duplex end + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">cursor-column:offset</span> + *cursor-column<span class="Special"> <- </span>copy left + <span class="muControl">reply</span> result +] + +<span class="muScenario">scenario</span> editor-deletes-to-start-of-line-with-ctrl-u-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start on first line (no newline before), press ctrl-u</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">2</span> + press ctrl-u + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes to start of line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .3 .</span> + <span class="Constant"> .456 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-deletes-to-start-of-line-with-ctrl-u-3 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start past end of line, press ctrl-u</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> + press ctrl-u + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes to start of line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .456 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-deletes-to-start-of-final-line-with-ctrl-u [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start past end of final line, press ctrl-u</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">3</span> + press ctrl-u + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes to start of line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .123 .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># ctrl-k - delete text from cursor to end of line (but not the newline)</span> + +<span class="muScenario">scenario</span> editor-deletes-to-end-of-line-with-ctrl-k [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start on first line, press ctrl-k</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">1</span> + press ctrl-k + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes to end of line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .1 .</span> + <span class="Constant"> .456 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + delete-to-end-of-line?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">11/ctrl-k</span> + <span class="muControl">break-unless</span> delete-to-end-of-line? +<span class="Constant"> <delete-to-end-of-line-begin></span> + deleted-cells:address:duplex-list<span class="Special"> <- </span>delete-to-end-of-line editor +<span class="Constant"> <delete-to-end-of-line-end></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> delete-to-end-of-line [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># compute range to delete</span> + start:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">before-cursor:offset</span> + end:address:duplex-list<span class="Special"> <- </span>next-duplex start + <span class="Delimiter">{</span> + at-end-of-text?:boolean<span class="Special"> <- </span>equal end, <span class="Constant">0/null</span> + <span class="muControl">break-if</span> at-end-of-text? + curr:character<span class="Special"> <- </span>get *end, <span class="Constant">value:offset</span> + at-end-of-line?:boolean<span class="Special"> <- </span>equal curr, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-end-of-line? + end<span class="Special"> <- </span>next-duplex end + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># snip it out</span> + result:address:duplex-list<span class="Special"> <- </span>next-duplex start + remove-duplex-between start, end + <span class="muControl">reply</span> result +] + +<span class="muScenario">scenario</span> editor-deletes-to-end-of-line-with-ctrl-k-2 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start on second line (no newline after), press ctrl-k</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press ctrl-k + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes to end of line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .123 .</span> + <span class="Constant"> .4 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-deletes-to-end-of-line-with-ctrl-k-3 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start at end of line</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">2</span> + press ctrl-k + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes just last character</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .12 .</span> + <span class="Constant"> .456 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-deletes-to-end-of-line-with-ctrl-k-4 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start past end of line</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">3</span> + press ctrl-k + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes nothing</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .123 .</span> + <span class="Constant"> .456 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-deletes-to-end-of-line-with-ctrl-k-5 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start at end of text</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">2</span> + press ctrl-k + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes just the final character</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .123 .</span> + <span class="Constant"> .45 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-deletes-to-end-of-line-with-ctrl-k-6 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[123</span> +<span class="Constant">456]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + <span class="Comment"># start past end of text</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">3</span> + press ctrl-k + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># cursor deletes nothing</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .123 .</span> + <span class="Constant"> .456 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># cursor-down can scroll if necessary</span> + +<span class="muScenario">scenario</span> editor-can-scroll-down-using-arrow-keys [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with >3 lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] + <span class="Comment"># position cursor at last line, then try to move further down</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">0</span> + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen slides by one line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><scroll-down></span> [ + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[scroll down]</span> + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + max:number<span class="Special"> <- </span>subtract right, left + old-top:address:duplex-list<span class="Special"> <- </span>copy *top-of-screen + *top-of-screen<span class="Special"> <- </span>before-start-of-next-line *top-of-screen, max + no-movement?:boolean<span class="Special"> <- </span>equal old-top, *top-of-screen + <span class="Comment"># Hack: this reply doesn't match one of the locations of <scroll-down>,</span> + <span class="Comment"># directly within insert-at-cursor. However, I'm unable to trigger the</span> + <span class="Comment"># error.. If necessary create a duplicate copy of <scroll-down> with the</span> + <span class="Comment"># right 'reply-if'.</span> + <span class="muControl">reply-if</span> no-movement?, editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> +] + +<span class="Comment"># takes a pointer into the doubly-linked list, scans ahead at most 'max'</span> +<span class="Comment"># positions until the next newline</span> +<span class="Comment"># beware: never return null pointer.</span> +<span class="muRecipe">recipe</span> before-start-of-next-line [ + <span class="Constant">local-scope</span> + original:address:duplex-list<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + max:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + count:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + curr:address:duplex-list<span class="Special"> <- </span>copy original + <span class="Comment"># skip the initial newline if it exists</span> + <span class="Delimiter">{</span> + c:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> at-newline? + curr<span class="Special"> <- </span>next-duplex curr + count<span class="Special"> <- </span>add count, <span class="Constant">1</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">reply-unless</span> curr, original + done?:boolean<span class="Special"> <- </span>greater-or-equal count, max + <span class="muControl">break-if</span> done? + c:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + at-newline?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-if</span> at-newline? + curr<span class="Special"> <- </span>next-duplex curr + count<span class="Special"> <- </span>add count, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply-unless</span> curr, original + <span class="muControl">reply</span> curr +] + +<span class="muScenario">scenario</span> editor-scrolls-down-past-wrapped-line-using-arrow-keys [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with a long, wrapped line and more than a screen of</span> + <span class="Comment"># other lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdef</span> +<span class="Constant">g</span> +<span class="Constant">h</span> +<span class="Constant">i]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .ef .</span> + <span class="Constant"> .g .</span> + ] + <span class="Comment"># position cursor at last line, then try to move further down</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">0</span> + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows partial wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .ef .</span> + <span class="Constant"> .g .</span> + <span class="Constant"> .h .</span> + ] +] + +<span class="muScenario">scenario</span> editor-scrolls-down-past-wrapped-line-using-arrow-keys-2 [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor starts with a long line wrapping twice</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdefghij</span> +<span class="Constant">k</span> +<span class="Constant">l</span> +<span class="Constant">m]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Comment"># position cursor at last line, then try to move further down</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">0</span> + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows partial wrapped line containing a wrap icon</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .efgh↩ .</span> + <span class="Constant"> .ij .</span> + <span class="Constant"> .k .</span> + ] + <span class="Comment"># scroll down again</span> + assume-console [ + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows partial wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .ij .</span> + <span class="Constant"> .k .</span> + <span class="Constant"> .l .</span> + ] +] + +<span class="muScenario">scenario</span> editor-scrolls-down-when-line-wraps [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">5/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor contains a long line in the third line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">cdef]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Comment"># position cursor at end, type a character</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">4</span> + type <span class="Constant">[g]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen scrolls</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> +<span class="Constant"> .cdef↩.</span> + <span class="Constant"> .g .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] +] + +<span class="muScenario">scenario</span> editor-scrolls-down-on-newline [ + assume-screen <span class="Constant">5/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># position cursor after last line and type newline</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">4</span> + type [ +] + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen scrolls</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] +] + +<span class="muScenario">scenario</span> editor-scrolls-down-on-right-arrow [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">5/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor contains a wrapped line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">cdefgh]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Comment"># position cursor at end of screen and try to move right</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">3</span> + press right-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen scrolls</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> +<span class="Constant"> .cdef↩.</span> + <span class="Constant"> .gh .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] +] + +<span class="muScenario">scenario</span> editor-scrolls-down-on-right-arrow-2 [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">5/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor contains more lines than can fit on screen</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Comment"># position cursor at end of screen and try to move right</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">3</span> + press right-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen scrolls</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] +] + +<span class="muScenario">scenario</span> editor-combines-page-and-line-scroll [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with a few pages of lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d</span> +<span class="Constant">e</span> +<span class="Constant">f</span> +<span class="Constant">g]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Comment"># scroll down one page and one line</span> + assume-console [ + press page-down + left-click <span class="Constant">3</span>, <span class="Constant">0</span> + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen scrolls down 3 lines</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .d .</span> + <span class="Constant"> .e .</span> + <span class="Constant"> .f .</span> + ] +] + +<span class="Comment"># cursor-up can scroll if necessary</span> + +<span class="muScenario">scenario</span> editor-can-scroll-up-using-arrow-keys [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with >3 lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] + <span class="Comment"># position cursor at top of second page, then try to move up</span> + assume-console [ + press page-down + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen slides by one line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><scroll-up></span> [ + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[scroll up]</span> + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + old-top:address:duplex-list<span class="Special"> <- </span>copy *top-of-screen + *top-of-screen<span class="Special"> <- </span>before-previous-line *top-of-screen, editor + no-movement?:boolean<span class="Special"> <- </span>equal old-top, *top-of-screen + <span class="muControl">reply-if</span> no-movement?, editor/same-as-ingredient:<span class="Constant">0</span>, <span class="Constant">0/no-more-render</span> +] + +<span class="Comment"># takes a pointer into the doubly-linked list, scans back to before start of</span> +<span class="Comment"># previous *wrapped* line</span> +<span class="Comment"># beware: never return null pointer</span> +<span class="muRecipe">recipe</span> before-previous-line [ + <span class="Constant">local-scope</span> + curr:address:duplex-list<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + c:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + <span class="Comment"># compute max, number of characters to skip</span> + <span class="Comment"># 1 + len%(width-1)</span> + <span class="Comment"># except rotate second term to vary from 1 to width-1 rather than 0 to width-2</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + left:number<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span> + max-line-length:number<span class="Special"> <- </span>subtract right, left, <span class="Constant">-1/exclusive-right</span>, <span class="Constant">1/wrap-icon</span> + sentinel:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span> + len:number<span class="Special"> <- </span>previous-line-length curr, sentinel + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> len + <span class="Comment"># empty line; just skip this newline</span> + prev:address:duplex-list<span class="Special"> <- </span>prev-duplex curr + <span class="muControl">reply-unless</span> prev, curr + <span class="muControl">reply</span> prev + <span class="Delimiter">}</span> + _, max:number<span class="Special"> <- </span>divide-with-remainder len, max-line-length + <span class="Comment"># remainder 0 => scan one width-worth</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> max + max<span class="Special"> <- </span>copy max-line-length + <span class="Delimiter">}</span> + max<span class="Special"> <- </span>add max, <span class="Constant">1</span> + count:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Comment"># skip 'max' characters</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal count, max + <span class="muControl">break-if</span> done? + prev:address:duplex-list<span class="Special"> <- </span>prev-duplex curr + <span class="muControl">break-unless</span> prev + curr<span class="Special"> <- </span>copy prev + count<span class="Special"> <- </span>add count, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> curr +] + +<span class="muScenario">scenario</span> editor-scrolls-up-past-wrapped-line-using-arrow-keys [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with a long, wrapped line and more than a screen of</span> + <span class="Comment"># other lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdef</span> +<span class="Constant">g</span> +<span class="Constant">h</span> +<span class="Constant">i]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .ef .</span> + <span class="Constant"> .g .</span> + ] + <span class="Comment"># position cursor at top of second page, just below wrapped line</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .g .</span> + <span class="Constant"> .h .</span> + <span class="Constant"> .i .</span> + ] + <span class="Comment"># now move up one line</span> + assume-console [ + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows partial wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .ef .</span> + <span class="Constant"> .g .</span> + <span class="Constant"> .h .</span> + ] +] + +<span class="muScenario">scenario</span> editor-scrolls-up-past-wrapped-line-using-arrow-keys-2 [ + <span class="Comment"># screen has 1 line for menu + 4 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># editor starts with a long line wrapping twice, occupying 3 of the 4 lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdefghij</span> +<span class="Constant">k</span> +<span class="Constant">l</span> +<span class="Constant">m]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Comment"># position cursor at top of second page</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .k .</span> + <span class="Constant"> .l .</span> + <span class="Constant"> .m .</span> + <span class="Constant"> .┈┈┈┈┈ .</span> + ] + <span class="Comment"># move up one line</span> + assume-console [ + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows partial wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .ij .</span> + <span class="Constant"> .k .</span> + <span class="Constant"> .l .</span> + <span class="Constant"> .m .</span> + ] + <span class="Comment"># move up a second line</span> + assume-console [ + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows partial wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .efgh↩ .</span> + <span class="Constant"> .ij .</span> + <span class="Constant"> .k .</span> + <span class="Constant"> .l .</span> + ] + <span class="Comment"># move up a third line</span> + assume-console [ + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows partial wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcd↩ .</span> + <span class="Constant"> .efgh↩ .</span> + <span class="Constant"> .ij .</span> + <span class="Constant"> .k .</span> + ] +] + +<span class="Comment"># same as editor-scrolls-up-past-wrapped-line-using-arrow-keys but length</span> +<span class="Comment"># slightly off, just to prevent over-training</span> +<span class="muScenario">scenario</span> editor-scrolls-up-past-wrapped-line-using-arrow-keys-3 [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with a long, wrapped line and more than a screen of</span> + <span class="Comment"># other lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdef</span> +<span class="Constant">g</span> +<span class="Constant">h</span> +<span class="Constant">i]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">6/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcde↩ .</span> + <span class="Constant"> .f .</span> + <span class="Constant"> .g .</span> + ] + <span class="Comment"># position cursor at top of second page, just below wrapped line</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .g .</span> + <span class="Constant"> .h .</span> + <span class="Constant"> .i .</span> + ] + <span class="Comment"># now move up one line</span> + assume-console [ + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows partial wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .f .</span> + <span class="Constant"> .g .</span> + <span class="Constant"> .h .</span> + ] +] + +<span class="Comment"># check empty lines</span> +<span class="muScenario">scenario</span> editor-scrolls-up-past-wrapped-line-using-arrow-keys-4 [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with some lines around an empty line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> + +c +d +e] + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">6/right</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + ] + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .d .</span> + <span class="Constant"> .e .</span> + <span class="Constant"> .┈┈┈┈┈┈ .</span> + ] + assume-console [ + press page-up + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + ] +] + +<span class="muScenario">scenario</span> editor-scrolls-up-on-left-arrow [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">5/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor contains >3 lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d</span> +<span class="Constant">e]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Comment"># position cursor at top of second page</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + <span class="Constant"> .e .</span> + ] + <span class="Comment"># now try to move left</span> + assume-console [ + press left-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen scrolls</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-scroll-up-to-start-of-file [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with >3 lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] + <span class="Comment"># position cursor at top of second page, then try to move up to start of</span> + <span class="Comment"># text</span> + assume-console [ + press page-down + press up-arrow + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen slides by one line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] + <span class="Comment"># try to move up again</span> + assume-console [ + press up-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen remains unchanged</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] +] + +<span class="Comment"># ctrl-f/page-down - render next page if it exists</span> + +<span class="muScenario">scenario</span> editor-can-scroll [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] + <span class="Comment"># scroll down</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows next page</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + page-down?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">6/ctrl-f</span> + <span class="muControl">break-unless</span> page-down? + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + old-top:address:duplex-list<span class="Special"> <- </span>copy *top-of-screen +<span class="Constant"> <move-cursor-begin></span> + page-down editor + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + no-movement?:boolean<span class="Special"> <- </span>equal *top-of-screen, old-top + <span class="muControl">reply-if</span> no-movement?, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + page-down?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65518/page-down</span> + <span class="muControl">break-unless</span> page-down? + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + old-top:address:duplex-list<span class="Special"> <- </span>copy *top-of-screen +<span class="Constant"> <move-cursor-begin></span> + page-down editor + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + no-movement?:boolean<span class="Special"> <- </span>equal *top-of-screen, old-top + <span class="muControl">reply-if</span> no-movement?, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># page-down skips entire wrapped lines, so it can't scroll past lines</span> +<span class="Comment"># taking up the entire screen</span> +<span class="muRecipe">recipe</span> page-down [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># if editor contents don't overflow screen, do nothing</span> + bottom-of-screen:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">bottom-of-screen:offset</span> + <span class="muControl">reply-unless</span> bottom-of-screen, editor/same-as-ingredient:<span class="Constant">0</span> + <span class="Comment"># if not, position cursor at final character</span> + before-cursor:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">before-cursor:offset</span> + *before-cursor<span class="Special"> <- </span>prev-duplex bottom-of-screen + <span class="Comment"># keep one line in common with previous page</span> + <span class="Delimiter">{</span> + last:character<span class="Special"> <- </span>get **before-cursor, <span class="Constant">value:offset</span> + newline?:boolean<span class="Special"> <- </span>equal last, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> newline?:boolean + *before-cursor<span class="Special"> <- </span>prev-duplex *before-cursor + <span class="Delimiter">}</span> + <span class="Comment"># move cursor and top-of-screen to start of that line</span> + move-to-start-of-line editor + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + *top-of-screen<span class="Special"> <- </span>copy *before-cursor + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muScenario">scenario</span> editor-does-not-scroll-past-end [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] + <span class="Comment"># scroll down</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen remains unmodified</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-starts-next-page-at-start-of-wrapped-line [ + <span class="Comment"># screen has 1 line for menu + 3 lines for text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor contains a long last line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">cdefgh]</span> + <span class="Comment"># editor screen triggers wrap of last line</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">4/right</span> + <span class="Comment"># some part of last line is not displayed</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .cde↩ .</span> + ] + <span class="Comment"># scroll down</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows entire wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .cde↩ .</span> + <span class="Constant"> .fgh .</span> + <span class="Constant"> .┈┈┈┈ .</span> + ] +] + +<span class="muScenario">scenario</span> editor-starts-next-page-at-start-of-wrapped-line-2 [ + <span class="Comment"># screen has 1 line for menu + 3 lines for text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor contains a very long line that occupies last two lines of screen</span> + <span class="Comment"># and still has something left over</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">bcdefgh]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">4/right</span> + <span class="Comment"># some part of last line is not displayed</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .bcd↩ .</span> + <span class="Constant"> .efg↩ .</span> + ] + <span class="Comment"># scroll down</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows entire wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .bcd↩ .</span> + <span class="Constant"> .efg↩ .</span> + <span class="Constant"> .h .</span> + ] +] + +<span class="Comment"># ctrl-b/page-up - render previous page if it exists</span> + +<span class="muScenario">scenario</span> editor-can-scroll-up [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] + <span class="Comment"># scroll down</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows next page</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] + <span class="Comment"># scroll back up</span> + assume-console [ + press page-up + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows original page again</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + page-up?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">2/ctrl-b</span> + <span class="muControl">break-unless</span> page-up? + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + old-top:address:duplex-list<span class="Special"> <- </span>copy *top-of-screen +<span class="Constant"> <move-cursor-begin></span> + editor<span class="Special"> <- </span>page-up editor, screen-height + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + no-movement?:boolean<span class="Special"> <- </span>equal *top-of-screen, old-top + <span class="muControl">reply-if</span> no-movement?, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-special-key></span> [ + <span class="Delimiter">{</span> + page-up?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65519/page-up</span> + <span class="muControl">break-unless</span> page-up? + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + old-top:address:duplex-list<span class="Special"> <- </span>copy *top-of-screen +<span class="Constant"> <move-cursor-begin></span> + editor<span class="Special"> <- </span>page-up editor, screen-height + undo-coalesce-tag:number<span class="Special"> <- </span>copy <span class="Constant">0/never</span> +<span class="Constant"> <move-cursor-end></span> + no-movement?:boolean<span class="Special"> <- </span>equal *top-of-screen, old-top + <span class="Comment"># don't bother re-rendering if nothing changed. todo: test this</span> + <span class="muControl">reply-if</span> no-movement?, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">0/no-more-render</span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> page-up [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen-height:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + max:number<span class="Special"> <- </span>subtract screen-height, <span class="Constant">1/menu-bar</span>, <span class="Constant">1/overlapping-line</span> + count:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal count, max + <span class="muControl">break-if</span> done? + prev:address:duplex-list<span class="Special"> <- </span>before-previous-line *top-of-screen, editor + <span class="muControl">break-unless</span> prev + *top-of-screen<span class="Special"> <- </span>copy prev + count<span class="Special"> <- </span>add count, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muScenario">scenario</span> editor-can-scroll-up-multiple-pages [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># initialize editor with 8 lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d</span> +<span class="Constant">e</span> +<span class="Constant">f</span> +<span class="Constant">g</span> +<span class="Constant">h]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] + <span class="Comment"># scroll down two pages</span> + assume-console [ + press page-down + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows third page</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .e .</span> + <span class="Constant"> .f .</span> + <span class="Constant"> .g .</span> + ] + <span class="Comment"># scroll up</span> + assume-console [ + press page-up + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows second page</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + <span class="Constant"> .e .</span> + ] + <span class="Comment"># scroll up again</span> + assume-console [ + press page-up + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows original page again</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-scroll-up-wrapped-lines [ + <span class="Comment"># screen has 1 line for menu + 5 lines for text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">6/height</span> + <span class="Comment"># editor contains a long line in the first page</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">cdefgh</span> +<span class="Constant">i</span> +<span class="Constant">j</span> +<span class="Constant">k</span> +<span class="Constant">l</span> +<span class="Constant">m</span> +<span class="Constant">n</span> +<span class="Constant">o]</span> + <span class="Comment"># editor screen triggers wrap of last line</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">4/right</span> + <span class="Comment"># some part of last line is not displayed</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .cde↩ .</span> + <span class="Constant"> .fgh .</span> + <span class="Constant"> .i .</span> + ] + <span class="Comment"># scroll down a page and a line</span> + assume-console [ + press page-down + left-click <span class="Constant">5</span>, <span class="Constant">0</span> + press down-arrow + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows entire wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .j .</span> + <span class="Constant"> .k .</span> + <span class="Constant"> .l .</span> + <span class="Constant"> .m .</span> + <span class="Constant"> .n .</span> + ] + <span class="Comment"># now scroll up one page</span> + assume-console [ + press page-up + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen resets</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .cde↩ .</span> + <span class="Constant"> .fgh .</span> + <span class="Constant"> .i .</span> + <span class="Constant"> .j .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-scroll-up-wrapped-lines-2 [ + <span class="Comment"># screen has 1 line for menu + 3 lines for text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor contains a very long line that occupies last two lines of screen</span> + <span class="Comment"># and still has something left over</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">bcdefgh]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">4/right</span> + <span class="Comment"># some part of last line is not displayed</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .bcd↩ .</span> + <span class="Constant"> .efg↩ .</span> + ] + <span class="Comment"># scroll down</span> + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen shows entire wrapped line</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .bcd↩ .</span> + <span class="Constant"> .efg↩ .</span> + <span class="Constant"> .h .</span> + ] + <span class="Comment"># scroll back up</span> + assume-console [ + press page-up + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># screen resets</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .bcd↩ .</span> + <span class="Constant"> .efg↩ .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-scroll-up-past-nonempty-lines [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># text with empty line in second screen</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[axx</span> +<span class="Constant">bxx</span> +<span class="Constant">cxx</span> +<span class="Constant">dxx</span> +<span class="Constant">exx</span> +<span class="Constant">fxx</span> +<span class="Constant">gxx</span> +<span class="Constant">hxx</span> +<span class="Constant">]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">4/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .axx .</span> + <span class="Constant"> .bxx .</span> + <span class="Constant"> .cxx .</span> + ] + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .cxx .</span> + <span class="Constant"> .dxx .</span> + <span class="Constant"> .exx .</span> + ] + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .exx .</span> + <span class="Constant"> .fxx .</span> + <span class="Constant"> .gxx .</span> + ] + <span class="Comment"># scroll back up past empty line</span> + assume-console [ + press page-up + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .cxx .</span> + <span class="Constant"> .dxx .</span> + <span class="Constant"> .exx .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-scroll-up-past-empty-lines [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># text with empty line in second screen</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[axy</span> +<span class="Constant">bxy</span> +<span class="Constant">cxy</span> + +dxy +exy +fxy +gxy +] + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">4/right</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .axy .</span> + <span class="Constant"> .bxy .</span> + <span class="Constant"> .cxy .</span> + ] + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .cxy .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .dxy .</span> + ] + assume-console [ + press page-down + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .dxy .</span> + <span class="Constant"> .exy .</span> + <span class="Constant"> .fxy .</span> + ] + <span class="Comment"># scroll back up past empty line</span> + assume-console [ + press page-up + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .cxy .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .dxy .</span> + ] +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/004-programming-environment.mu.html b/html/edit/004-programming-environment.mu.html new file mode 100644 index 00000000..406c19a9 --- /dev/null +++ b/html/edit/004-programming-environment.mu.html @@ -0,0 +1,826 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/004-programming-environment.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muRecipe { color: #ff8700; } +.muData { color: #ffff00; } +.Special { color: #ff6060; } +.muScenario { color: #00af00; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.CommentedCode { color: #6c6c6c; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## putting the environment together out of editors</span> +<span class="Comment">#</span> +<span class="Comment"># Consists of one editor on the left for recipes and one on the right for the</span> +<span class="Comment"># sandbox.</span> + +<span class="muRecipe">recipe!</span> main [ + <span class="Constant">local-scope</span> + open-console + initial-recipe:address:array:character<span class="Special"> <- </span>restore <span class="Constant">[recipes.mu]</span> + initial-sandbox:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + hide-screen <span class="Constant">0/screen</span> + env:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment <span class="Constant">0/screen</span>, initial-recipe, initial-sandbox + env<span class="Special"> <- </span>restore-sandboxes env + render-all <span class="Constant">0/screen</span>, env + event-loop <span class="Constant">0/screen</span>, <span class="Constant">0/console</span>, env + <span class="Comment"># never gets here</span> +] + +<span class="muData">container</span> programming-environment-data [ + recipes:address:editor-data + current-sandbox:address:editor-data + sandbox-in-focus?:boolean <span class="Comment"># false => cursor in recipes; true => cursor in current-sandbox</span> +] + +<span class="muRecipe">recipe</span> new-programming-environment [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + initial-recipe-contents:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + initial-sandbox-contents:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + width:number<span class="Special"> <- </span>screen-width screen + height:number<span class="Special"> <- </span>screen-height screen + <span class="Comment"># top menu</span> + result:address:programming-environment-data<span class="Special"> <- </span>new <span class="Constant">programming-environment-data:type</span> + draw-horizontal screen, <span class="Constant">0</span>, <span class="Constant">0/left</span>, width, <span class="Constant">32/space</span>, <span class="Constant">0/black</span>, <span class="Constant">238/grey</span> + button-start:number<span class="Special"> <- </span>subtract width, <span class="Constant">20</span> + button-on-screen?:boolean<span class="Special"> <- </span>greater-or-equal button-start, <span class="Constant">0</span> + assert button-on-screen?, <span class="Constant">[screen too narrow for menu]</span> + screen<span class="Special"> <- </span>move-cursor screen, <span class="Constant">0/row</span>, button-start + run-button:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ run (F4) ]</span> + print-string screen, run-button, <span class="Constant">255/white</span>, <span class="Constant">161/reddish</span> + <span class="Comment"># dotted line down the middle</span> + divider:number, _<span class="Special"> <- </span>divide-with-remainder width, <span class="Constant">2</span> + draw-vertical screen, divider, <span class="Constant">1/top</span>, height, <span class="Constant">9482/vertical-dotted</span> + <span class="Comment"># recipe editor on the left</span> + recipes:address:address:editor-data<span class="Special"> <- </span>get-address *result, <span class="Constant">recipes:offset</span> + *recipes<span class="Special"> <- </span>new-editor initial-recipe-contents, screen, <span class="Constant">0/left</span>, divider/right + <span class="Comment"># sandbox editor on the right</span> + new-left:number<span class="Special"> <- </span>add divider, <span class="Constant">1</span> + current-sandbox:address:address:editor-data<span class="Special"> <- </span>get-address *result, <span class="Constant">current-sandbox:offset</span> + *current-sandbox<span class="Special"> <- </span>new-editor initial-sandbox-contents, screen, new-left, width/right +<span class="Constant"> +programming-environment-initialization</span> + <span class="muControl">reply</span> result +] + +<span class="muRecipe">recipe</span> event-loop [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + console:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + recipes:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span> + current-sandbox:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + sandbox-in-focus?:address:boolean<span class="Special"> <- </span>get-address *env, <span class="Constant">sandbox-in-focus?:offset</span> + <span class="Comment"># if we fall behind we'll stop updating the screen, but then we have to</span> + <span class="Comment"># render the entire screen when we catch up.</span> + <span class="Comment"># todo: test this</span> + render-all-on-no-more-events?:boolean<span class="Special"> <- </span>copy <span class="Constant">0/false</span> + <span class="Delimiter">{</span> + <span class="Comment"># looping over each (keyboard or touch) event as it occurs</span> +<span class="Constant"> +next-event</span> + e:event, console, found?:boolean, quit?:boolean<span class="Special"> <- </span>read-event console + <span class="muControl">loop-unless</span> found? + <span class="muControl">break-if</span> quit? <span class="Comment"># only in tests</span> + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[next-event]</span> +<span class="Constant"> <handle-event></span> + <span class="Comment"># check for global events that will trigger regardless of which editor has focus</span> + <span class="Delimiter">{</span> + k:address:number<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">keycode:variant</span> + <span class="muControl">break-unless</span> k +<span class="Constant"> <global-keypress></span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + c:address:character<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">text:variant</span> + <span class="muControl">break-unless</span> c +<span class="Constant"> <global-type></span> + <span class="Delimiter">}</span> + <span class="Comment"># 'touch' event - send to both sides, see what picks it up</span> + <span class="Delimiter">{</span> + t:address:touch-event<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">touch:variant</span> + <span class="muControl">break-unless</span> t + <span class="Comment"># ignore all but 'left-click' events for now</span> + <span class="Comment"># todo: test this</span> + touch-type:number<span class="Special"> <- </span>get *t, <span class="Constant">type:offset</span> + is-left-click?:boolean<span class="Special"> <- </span>equal touch-type, <span class="Constant">65513/mouse-left</span> + <span class="muControl">loop-unless</span> is-left-click?, <span class="Constant">+next-event:label</span> + <span class="Comment"># later exceptions for non-editor touches will go here</span> +<span class="Constant"> <global-touch></span> + <span class="Comment"># send to both editors</span> + _<span class="Special"> <- </span>move-cursor-in-editor screen, recipes, *t + *sandbox-in-focus?<span class="Special"> <- </span>move-cursor-in-editor screen, current-sandbox, *t + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus? + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># 'resize' event - redraw editor</span> + <span class="Comment"># todo: test this after supporting resize in assume-console</span> + <span class="Delimiter">{</span> + r:address:resize-event<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">resize:variant</span> + <span class="muControl">break-unless</span> r + <span class="Comment"># if more events, we're still resizing; wait until we stop</span> + more-events?:boolean<span class="Special"> <- </span>has-more-events? console + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> more-events? + render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> <span class="Comment"># no rendering now, full rendering on some future event</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> more-events? + env<span class="Special"> <- </span>resize screen, env + screen<span class="Special"> <- </span>render-all screen, env + render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">0/false</span> <span class="Comment"># full render done</span> + <span class="Delimiter">}</span> + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># if it's not global and not a touch event, send to appropriate editor</span> + <span class="Delimiter">{</span> + hide-screen screen + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> *sandbox-in-focus? + screen, recipes, render?:boolean<span class="Special"> <- </span>handle-keyboard-event screen, recipes, e:event + <span class="Comment"># refresh screen only if no more events</span> + <span class="Comment"># if there are more events to process, wait for them to clear up, then make sure you render-all afterward.</span> + more-events?:boolean<span class="Special"> <- </span>has-more-events? console + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> more-events? + render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> <span class="Comment"># no rendering now, full rendering on some future event</span> + <span class="muControl">jump</span> <span class="Constant">+finish-event:label</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> more-events? + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> render-all-on-no-more-events? + <span class="Comment"># no more events, and we have to force render</span> + screen<span class="Special"> <- </span>render-all screen, env + render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">0/false</span> + <span class="muControl">jump</span> <span class="Constant">+finish-event:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># no more events, no force render</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> render? + screen<span class="Special"> <- </span>render-recipes screen, env + <span class="muControl">jump</span> <span class="Constant">+finish-event:label</span> + <span class="Delimiter">}</span> + <span class="Delimiter">}</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> *sandbox-in-focus? + screen, current-sandbox, render?:boolean<span class="Special"> <- </span>handle-keyboard-event screen, current-sandbox, e:event + <span class="Comment"># refresh screen only if no more events</span> + <span class="Comment"># if there are more events to process, wait for them to clear up, then make sure you render-all afterward.</span> + more-events?:boolean<span class="Special"> <- </span>has-more-events? console + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> more-events? + render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> <span class="Comment"># no rendering now, full rendering on some future event</span> + <span class="muControl">jump</span> <span class="Constant">+finish-event:label</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> more-events? + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> render-all-on-no-more-events? + <span class="Comment"># no more events, and we have to force render</span> + screen<span class="Special"> <- </span>render-all screen, env + render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">0/false</span> + <span class="muControl">jump</span> <span class="Constant">+finish-event:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># no more events, no force render</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> render? + screen<span class="Special"> <- </span>render-sandbox-side screen, env + <span class="muControl">jump</span> <span class="Constant">+finish-event:label</span> + <span class="Delimiter">}</span> + <span class="Delimiter">}</span> + <span class="Delimiter">}</span> +<span class="Constant"> +finish-event</span> + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus? + show-screen screen + <span class="Delimiter">}</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> resize [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + clear-screen screen <span class="Comment"># update screen dimensions</span> + width:number<span class="Special"> <- </span>screen-width screen + divider:number, _<span class="Special"> <- </span>divide-with-remainder width, <span class="Constant">2</span> + <span class="Comment"># update recipe editor</span> + recipes:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span> + right:address:number<span class="Special"> <- </span>get-address *recipes, <span class="Constant">right:offset</span> + *right<span class="Special"> <- </span>subtract divider, <span class="Constant">1</span> + <span class="Comment"># reset cursor (later we'll try to preserve its position)</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *recipes, <span class="Constant">cursor-row:offset</span> + *cursor-row<span class="Special"> <- </span>copy <span class="Constant">1</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *recipes, <span class="Constant">cursor-column:offset</span> + *cursor-column<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Comment"># update sandbox editor</span> + current-sandbox:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + left:address:number<span class="Special"> <- </span>get-address *current-sandbox, <span class="Constant">left:offset</span> + right:address:number<span class="Special"> <- </span>get-address *current-sandbox, <span class="Constant">right:offset</span> + *left<span class="Special"> <- </span>add divider, <span class="Constant">1</span> + *right<span class="Special"> <- </span>subtract width, <span class="Constant">1</span> + <span class="Comment"># reset cursor (later we'll try to preserve its position)</span> + cursor-row:address:number<span class="Special"> <- </span>get-address *current-sandbox, <span class="Constant">cursor-row:offset</span> + *cursor-row<span class="Special"> <- </span>copy <span class="Constant">1</span> + cursor-column:address:number<span class="Special"> <- </span>get-address *current-sandbox, <span class="Constant">cursor-column:offset</span> + *cursor-column<span class="Special"> <- </span>copy *left + <span class="muControl">reply</span> env/same-as-ingredient:<span class="Constant">1</span> +] + +<span class="muScenario">scenario</span> point-at-multiple-editors [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># initialize both halves of screen</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[def]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># focus on both sides</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">1</span> + left-click <span class="Constant">1</span>, <span class="Constant">17</span> + ] + <span class="Comment"># check cursor column in each</span> + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + <span class="Constant">4</span>:address:editor-data<span class="Special"> <- </span>get *<span class="Constant">3</span>:address:programming-environment-data, <span class="Constant">recipes:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">4</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">6</span>:address:editor-data<span class="Special"> <- </span>get *<span class="Constant">3</span>:address:programming-environment-data, <span class="Constant">current-sandbox:offset</span> + <span class="Constant">7</span>:number<span class="Special"> <- </span>get *<span class="Constant">6</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + memory-should-contain [ + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">7</span><span class="Special"> <- </span><span class="Constant">17</span> + ] +] + +<span class="muScenario">scenario</span> edit-multiple-editors [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># initialize both halves of screen</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[def]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + render-all screen, <span class="Constant">3</span>:address:programming-environment-data + <span class="Comment"># type one letter in each of them</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">1</span> + type <span class="Constant">[0]</span> + left-click <span class="Constant">1</span>, <span class="Constant">17</span> + type <span class="Constant">[1]</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + <span class="Constant">4</span>:address:editor-data<span class="Special"> <- </span>get *<span class="Constant">3</span>:address:programming-environment-data, <span class="Constant">recipes:offset</span> + <span class="Constant">5</span>:number<span class="Special"> <- </span>get *<span class="Constant">4</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">6</span>:address:editor-data<span class="Special"> <- </span>get *<span class="Constant">3</span>:address:programming-environment-data, <span class="Constant">current-sandbox:offset</span> + <span class="Constant">7</span>:number<span class="Special"> <- </span>get *<span class="Constant">6</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + screen-should-contain [ + <span class="Constant"> . run (F4) . # this line has a different background, but we don't test that yet</span> + <span class="Constant"> .a0bc ┊d1ef .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + memory-should-contain [ + <span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># cursor column of recipe editor</span> + <span class="Constant">7</span><span class="Special"> <- </span><span class="Constant">18</span> <span class="Comment"># cursor column of sandbox editor</span> + ] + <span class="Comment"># show the cursor at the right window</span> + run [ + print-character screen:address, <span class="Constant">9251/␣/cursor</span> + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .a0bc ┊d1␣f .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> multiple-editors-cover-only-their-own-areas [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">60/width</span>, <span class="Constant">10/height</span> + run [ + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[def]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + render-all screen, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># divider isn't messed up</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .abc ┊def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> editor-in-focus-keeps-cursor [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[def]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + render-all screen, <span class="Constant">3</span>:address:programming-environment-data + <span class="Comment"># initialize programming environment and highlight cursor</span> + assume-console <span class="Constant">[]</span> + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + print-character screen:address, <span class="Constant">9251/␣/cursor</span> + ] + <span class="Comment"># is cursor at the right place?</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .␣bc ┊def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># now try typing a letter</span> + assume-console [ + type <span class="Constant">[z]</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + print-character screen:address, <span class="Constant">9251/␣/cursor</span> + ] + <span class="Comment"># cursor should still be right</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .z␣bc ┊def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> backspace-in-sandbox-editor-joins-lines [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># initialize sandbox side with two lines</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + render-all screen, <span class="Constant">3</span>:address:programming-environment-data + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊abc .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊def .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># position cursor at start of second line and hit backspace</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">16</span> + press backspace + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + print-character screen:address, <span class="Constant">9251/␣/cursor</span> + ] + <span class="Comment"># cursor moves to end of old line</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊abc␣ef .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muRecipe">recipe</span> render-all [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[render all]</span> + hide-screen screen + <span class="Comment"># top menu</span> + trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render top menu]</span> + width:number<span class="Special"> <- </span>screen-width screen + draw-horizontal screen, <span class="Constant">0</span>, <span class="Constant">0/left</span>, width, <span class="Constant">32/space</span>, <span class="Constant">0/black</span>, <span class="Constant">238/grey</span> + button-start:number<span class="Special"> <- </span>subtract width, <span class="Constant">20</span> + button-on-screen?:boolean<span class="Special"> <- </span>greater-or-equal button-start, <span class="Constant">0</span> + assert button-on-screen?, <span class="Constant">[screen too narrow for menu]</span> + screen<span class="Special"> <- </span>move-cursor screen, <span class="Constant">0/row</span>, button-start + run-button:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ run (F4) ]</span> + print-string screen, run-button, <span class="Constant">255/white</span>, <span class="Constant">161/reddish</span> + <span class="Comment"># dotted line down the middle</span> + trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render divider]</span> + divider:number, _<span class="Special"> <- </span>divide-with-remainder width, <span class="Constant">2</span> + height:number<span class="Special"> <- </span>screen-height screen + draw-vertical screen, divider, <span class="Constant">1/top</span>, height, <span class="Constant">9482/vertical-dotted</span> + <span class="Comment">#</span> + screen<span class="Special"> <- </span>render-recipes screen, env + screen<span class="Special"> <- </span>render-sandbox-side screen, env +<span class="Constant"> <render-components-end></span> + <span class="Comment">#</span> + recipes:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span> + current-sandbox:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + sandbox-in-focus?:boolean<span class="Special"> <- </span>get *env, <span class="Constant">sandbox-in-focus?:offset</span> + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, sandbox-in-focus? + <span class="Comment">#</span> + show-screen screen + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muRecipe">recipe</span> render-recipes [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render recipes]</span> + recipes:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span> + <span class="Comment"># render recipes</span> + left:number<span class="Special"> <- </span>get *recipes, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *recipes, <span class="Constant">right:offset</span> + row:number, column:number, screen<span class="Special"> <- </span>render screen, recipes + clear-line-delimited screen, column, right + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> +<span class="Constant"> <render-recipe-components-end></span> + <span class="Comment"># draw dotted line after recipes</span> + draw-horizontal screen, row, left, right, <span class="Constant">9480/horizontal-dotted</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + clear-screen-from screen, row, left, left, right + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="Comment"># replaced in a later layer</span> +<span class="muRecipe">recipe</span> render-sandbox-side [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + current-sandbox:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + left:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">right:offset</span> + row:number, column:number, screen, current-sandbox<span class="Special"> <- </span>render screen, current-sandbox + clear-line-delimited screen, column, right + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + <span class="Comment"># draw solid line after recipes (you'll see why in later layers)</span> + draw-horizontal screen, row, left, right, <span class="Constant">9473/horizontal</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + clear-screen-from screen, row, left, left, right + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muRecipe">recipe</span> update-cursor [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + recipes:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + current-sandbox:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + sandbox-in-focus?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> sandbox-in-focus? + cursor-row:number<span class="Special"> <- </span>get *recipes, <span class="Constant">cursor-row:offset</span> + cursor-column:number<span class="Special"> <- </span>get *recipes, <span class="Constant">cursor-column:offset</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> sandbox-in-focus? + cursor-row:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">cursor-row:offset</span> + cursor-column:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">cursor-column:offset</span> + <span class="Delimiter">}</span> + screen<span class="Special"> <- </span>move-cursor screen, cursor-row, cursor-column + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="Comment"># row, screen <- render-string screen:address, s:address:array:character, left:number, right:number, color:number, row:number</span> +<span class="Comment"># print a string 's' to 'editor' in 'color' starting at 'row'</span> +<span class="Comment"># clear rest of last line, move cursor to next line</span> +<span class="muRecipe">recipe</span> render-string [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + s:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + color:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">reply-unless</span> s, row/same-as-ingredient:<span class="Constant">5</span>, screen/same-as-ingredient:<span class="Constant">0</span> + column:number<span class="Special"> <- </span>copy left + screen<span class="Special"> <- </span>move-cursor screen, row, column + screen-height:number<span class="Special"> <- </span>screen-height screen + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + len:number<span class="Special"> <- </span>length *s + <span class="Delimiter">{</span> +<span class="Constant"> +next-character</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal i, len + <span class="muControl">break-if</span> done? + done?<span class="Special"> <- </span>greater-or-equal row, screen-height + <span class="muControl">break-if</span> done? + c:character<span class="Special"> <- </span>index *s, i + <span class="Delimiter">{</span> + <span class="Comment"># at right? wrap.</span> + at-right?:boolean<span class="Special"> <- </span>equal column, right + <span class="muControl">break-unless</span> at-right? + <span class="Comment"># print wrap icon</span> + print-character screen, <span class="Constant">8617/loop-back-to-left</span>, <span class="Constant">245/grey</span> + column<span class="Special"> <- </span>copy left + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + screen<span class="Special"> <- </span>move-cursor screen, row, column + <span class="muControl">loop</span> <span class="Constant">+next-character:label</span> <span class="Comment"># retry i</span> + <span class="Delimiter">}</span> + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="Delimiter">{</span> + <span class="Comment"># newline? move to left rather than 0</span> + newline?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> newline? + <span class="Comment"># clear rest of line in this window</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-than column, right + <span class="muControl">break-if</span> done? + print-character screen, <span class="Constant">32/space</span> + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + column<span class="Special"> <- </span>copy left + screen<span class="Special"> <- </span>move-cursor screen, row, column + <span class="muControl">loop</span> <span class="Constant">+next-character:label</span> + <span class="Delimiter">}</span> + print-character screen, c, color + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + was-at-left?:boolean<span class="Special"> <- </span>equal column, left + clear-line-delimited screen, column, right + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> was-at-left? + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + <span class="Delimiter">}</span> + move-cursor row, left + <span class="muControl">reply</span> row/same-as-ingredient:<span class="Constant">5</span>, screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="Comment"># row, screen <- render-code-string screen:address, s:address:array:character, left:number, right:number, row:number</span> +<span class="Comment"># like 'render-string' but with colorization for comments like in the editor</span> +<span class="muRecipe">recipe</span> render-code-string [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + s:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">reply-unless</span> s, row/same-as-ingredient:<span class="Constant">4</span>, screen/same-as-ingredient:<span class="Constant">0</span> + color:number<span class="Special"> <- </span>copy <span class="Constant">7/white</span> + column:number<span class="Special"> <- </span>copy left + screen<span class="Special"> <- </span>move-cursor screen, row, column + screen-height:number<span class="Special"> <- </span>screen-height screen + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + len:number<span class="Special"> <- </span>length *s + <span class="Delimiter">{</span> +<span class="Constant"> +next-character</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal i, len + <span class="muControl">break-if</span> done? + done?<span class="Special"> <- </span>greater-or-equal row, screen-height + <span class="muControl">break-if</span> done? + c:character<span class="Special"> <- </span>index *s, i + <span class="Constant"><character-c-received></span> <span class="Comment"># only line different from render-string</span> + <span class="Delimiter">{</span> + <span class="Comment"># at right? wrap.</span> + at-right?:boolean<span class="Special"> <- </span>equal column, right + <span class="muControl">break-unless</span> at-right? + <span class="Comment"># print wrap icon</span> + print-character screen, <span class="Constant">8617/loop-back-to-left</span>, <span class="Constant">245/grey</span> + column<span class="Special"> <- </span>copy left + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + screen<span class="Special"> <- </span>move-cursor screen, row, column + <span class="muControl">loop</span> <span class="Constant">+next-character:label</span> <span class="Comment"># retry i</span> + <span class="Delimiter">}</span> + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="Delimiter">{</span> + <span class="Comment"># newline? move to left rather than 0</span> + newline?:boolean<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span> + <span class="muControl">break-unless</span> newline? + <span class="Comment"># clear rest of line in this window</span> + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-than column, right + <span class="muControl">break-if</span> done? + print-character screen, <span class="Constant">32/space</span> + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + column<span class="Special"> <- </span>copy left + screen<span class="Special"> <- </span>move-cursor screen, row, column + <span class="muControl">loop</span> <span class="Constant">+next-character:label</span> + <span class="Delimiter">}</span> + print-character screen, c, color + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + was-at-left?:boolean<span class="Special"> <- </span>equal column, left + clear-line-delimited screen, column, right + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> was-at-left? + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + <span class="Delimiter">}</span> + move-cursor row, left + <span class="muControl">reply</span> row/same-as-ingredient:<span class="Constant">4</span>, screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="Comment"># ctrl-l - redraw screen (just in case it printed junk somehow)</span> + +<span class="muRecipe">after</span> <span class="Constant"><global-type></span> [ + <span class="Delimiter">{</span> + redraw-screen?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">12/ctrl-l</span> + <span class="muControl">break-unless</span> redraw-screen? + screen<span class="Special"> <- </span>render-all screen, env:address:programming-environment-data + sync-screen screen + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># ctrl-n - switch focus</span> +<span class="Comment"># todo: test this</span> + +<span class="muRecipe">after</span> <span class="Constant"><global-type></span> [ + <span class="Delimiter">{</span> + switch-side?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">14/ctrl-n</span> + <span class="muControl">break-unless</span> switch-side? + *sandbox-in-focus?<span class="Special"> <- </span>not *sandbox-in-focus? + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus? + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># ctrl-x - maximize/unmaximize the side with focus</span> + +<span class="muScenario">scenario</span> maximize-side [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span> + <span class="Comment"># initialize both halves of screen</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[def]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + screen<span class="Special"> <- </span>render-all screen, <span class="Constant">3</span>:address:programming-environment-data + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .abc ┊def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># hit ctrl-x</span> + assume-console [ + press ctrl-x + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># only left side visible</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># hit any key to toggle back</span> + assume-console [ + press ctrl-x + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .abc ┊def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="CommentedCode">#? # ctrl-t - browse trace</span> +<span class="CommentedCode">#? after <global-type> [</span> +<span class="CommentedCode">#? {</span> +<span class="CommentedCode">#? browse-trace?:boolean <- equal *c, 20/ctrl-t</span> +<span class="CommentedCode">#? break-unless browse-trace?</span> +<span class="CommentedCode">#? $browse-trace</span> +<span class="CommentedCode">#? screen <- render-all screen, env:address:programming-environment-data</span> +<span class="CommentedCode">#? loop +next-event:label</span> +<span class="CommentedCode">#? }</span> +<span class="CommentedCode">#? ]</span> + +<span class="muData">container</span> programming-environment-data [ + maximized?:boolean +] + +<span class="muRecipe">after</span> <span class="Constant"><global-type></span> [ + <span class="Delimiter">{</span> + maximize?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">24/ctrl-x</span> + <span class="muControl">break-unless</span> maximize? + screen, console<span class="Special"> <- </span>maximize screen, console, env:address:programming-environment-data + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> maximize [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + console:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + hide-screen screen + <span class="Comment"># maximize one of the sides</span> + maximized?:address:boolean<span class="Special"> <- </span>get-address *env, <span class="Constant">maximized?:offset</span> + *maximized?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> + <span class="Comment">#</span> + sandbox-in-focus?:boolean<span class="Special"> <- </span>get *env, <span class="Constant">sandbox-in-focus?:offset</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> sandbox-in-focus? + editor:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span> + right:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">right:offset</span> + *right<span class="Special"> <- </span>screen-width screen + *right<span class="Special"> <- </span>subtract *right, <span class="Constant">1</span> + screen<span class="Special"> <- </span>render-recipes screen, env + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> sandbox-in-focus? + editor:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + left:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">left:offset</span> + *left<span class="Special"> <- </span>copy <span class="Constant">0</span> + screen<span class="Special"> <- </span>render-sandbox-side screen, env + <span class="Delimiter">}</span> + show-screen screen + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, console/same-as-ingredient:<span class="Constant">1</span> +] + +<span class="Comment"># when maximized, wait for any event and simply unmaximize</span> +<span class="muRecipe">after</span> <span class="Constant"><handle-event></span> [ + <span class="Delimiter">{</span> + maximized?:address:boolean<span class="Special"> <- </span>get-address *env, <span class="Constant">maximized?:offset</span> + <span class="muControl">break-unless</span> *maximized? + *maximized?<span class="Special"> <- </span>copy <span class="Constant">0/false</span> + <span class="Comment"># undo maximize</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> *sandbox-in-focus? + editor:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span> + right:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">right:offset</span> + *right<span class="Special"> <- </span>screen-width screen + *right<span class="Special"> <- </span>divide *right, <span class="Constant">2</span> + *right<span class="Special"> <- </span>subtract *right, <span class="Constant">1</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> *sandbox-in-focus? + editor:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + left:address:number<span class="Special"> <- </span>get-address *editor, <span class="Constant">left:offset</span> + *left<span class="Special"> <- </span>screen-width screen + *left<span class="Special"> <- </span>divide *left, <span class="Constant">2</span> + *left<span class="Special"> <- </span>add *left, <span class="Constant">1</span> + <span class="Delimiter">}</span> + render-all screen, env + show-screen screen + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="SalientComment">## helpers</span> + +<span class="muRecipe">recipe</span> draw-vertical [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + col:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + y:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + bottom:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + style:character, style-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> style-found? + style<span class="Special"> <- </span>copy <span class="Constant">9474/vertical</span> + <span class="Delimiter">}</span> + color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Delimiter">{</span> + <span class="Comment"># default color to white</span> + <span class="muControl">break-if</span> color-found? + color<span class="Special"> <- </span>copy <span class="Constant">245/grey</span> + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + continue?:boolean<span class="Special"> <- </span>lesser-than y, bottom + <span class="muControl">break-unless</span> continue? + screen<span class="Special"> <- </span>move-cursor screen, y, col + print-character screen, style, color + y<span class="Special"> <- </span>add y, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/005-sandbox.mu.html b/html/edit/005-sandbox.mu.html new file mode 100644 index 00000000..7115ca00 --- /dev/null +++ b/html/edit/005-sandbox.mu.html @@ -0,0 +1,555 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/005-sandbox.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muScenario { color: #00af00; } +.muData { color: #ffff00; } +.Special { color: #ff6060; } +.muRecipe { color: #ff8700; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## running code from the editor and creating sandboxes</span> +<span class="Comment">#</span> +<span class="Comment"># Running code in the sandbox editor prepends its contents to a list of</span> +<span class="Comment"># (non-editable) sandboxes below the editor, showing the result and a maybe</span> +<span class="Comment"># few other things.</span> + +<span class="muData">container</span> programming-environment-data [ + sandbox:address:sandbox-data <span class="Comment"># list of sandboxes, from top to bottom</span> +] + +<span class="muData">container</span> sandbox-data [ + data:address:array:character + response:address:array:character + expected-response:address:array:character + <span class="Comment"># coordinates to track clicks</span> + starting-row-on-screen:number + code-ending-row-on-screen:number <span class="Comment"># past end of code</span> + response-starting-row-on-screen:number + screen:address:screen <span class="Comment"># prints in the sandbox go here</span> + next-sandbox:address:sandbox-data +] + +<span class="muScenario">scenario</span> run-and-show-results [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span> + <span class="Comment"># recipe editor is empty</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Comment"># sandbox editor contains an instruction without storing outputs</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[divide-with-remainder 11, 3]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># run the code in the editors</span> + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># check that screen prints the results</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊divide-with-remainder 11, 3 .</span> + <span class="Constant"> . ┊3 .</span> + <span class="Constant"> . ┊2 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + screen-should-contain-in-color <span class="Constant">7/white</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . divide-with-remainder 11, 3 .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] + screen-should-contain-in-color <span class="Constant">245/grey</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊3 .</span> + <span class="Constant"> . ┊2 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># run another command</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">80</span> + type <span class="Constant">[add 2, 2]</span> + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># check that screen prints the results</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊add 2, 2 .</span> + <span class="Constant"> . ┊4 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊divide-with-remainder 11, 3 .</span> + <span class="Constant"> . ┊3 .</span> + <span class="Constant"> . ┊2 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="Comment"># hook into event-loop recipe: read non-unicode keypress from k, process it if</span> +<span class="Comment"># necessary, then go to next level</span> +<span class="muRecipe">after</span> <span class="Constant"><global-keypress></span> [ + <span class="Comment"># F4? load all code and run all sandboxes.</span> + <span class="Delimiter">{</span> + do-run?:boolean<span class="Special"> <- </span>equal *k, <span class="Constant">65532/F4</span> + <span class="muControl">break-unless</span> do-run? + status:address:array:character<span class="Special"> <- </span>new <span class="Constant">[running... ]</span> + screen<span class="Special"> <- </span>update-status screen, status, <span class="Constant">245/grey</span> + error?:boolean, env, screen<span class="Special"> <- </span>run-sandboxes env, screen + <span class="Comment"># F4 might update warnings and results on both sides</span> + screen<span class="Special"> <- </span>render-all screen, env + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> error? + status:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ ]</span> + screen<span class="Special"> <- </span>update-status screen, status, <span class="Constant">245/grey</span> + <span class="Delimiter">}</span> + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus? + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> run-sandboxes [ + <span class="Constant">local-scope</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + stop?:boolean, env, screen<span class="Special"> <- </span>update-recipes env, screen + <span class="muControl">reply-if</span> stop?, <span class="Constant">1/errors-found</span>, env/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span> + <span class="Comment"># check contents of right editor (sandbox)</span> + current-sandbox:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + <span class="Delimiter">{</span> + sandbox-contents:address:array:character<span class="Special"> <- </span>editor-contents current-sandbox + <span class="muControl">break-unless</span> sandbox-contents + <span class="Comment"># if contents exist, first save them</span> + <span class="Comment"># run them and turn them into a new sandbox-data</span> + new-sandbox:address:sandbox-data<span class="Special"> <- </span>new <span class="Constant">sandbox-data:type</span> + data:address:address:array:character<span class="Special"> <- </span>get-address *new-sandbox, <span class="Constant">data:offset</span> + *data<span class="Special"> <- </span>copy sandbox-contents + <span class="Comment"># push to head of sandbox list</span> + dest:address:address:sandbox-data<span class="Special"> <- </span>get-address *env, <span class="Constant">sandbox:offset</span> + next:address:address:sandbox-data<span class="Special"> <- </span>get-address *new-sandbox, <span class="Constant">next-sandbox:offset</span> + *next<span class="Special"> <- </span>copy *dest + *dest<span class="Special"> <- </span>copy new-sandbox + <span class="Comment"># clear sandbox editor</span> + init:address:address:duplex-list<span class="Special"> <- </span>get-address *current-sandbox, <span class="Constant">data:offset</span> + *init<span class="Special"> <- </span>push-duplex <span class="Constant">167/§</span>, <span class="Constant">0/tail</span> + top-of-screen:address:address:duplex-list<span class="Special"> <- </span>get-address *current-sandbox, <span class="Constant">top-of-screen:offset</span> + *top-of-screen<span class="Special"> <- </span>copy *init + <span class="Delimiter">}</span> + <span class="Comment"># save all sandboxes before running, just in case we die when running</span> + save-sandboxes env + <span class="Comment"># run all sandboxes</span> + curr:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> curr + update-sandbox curr + curr<span class="Special"> <- </span>get *curr, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> <span class="Constant">0/no-errors-found</span>, env/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span> +] + +<span class="Comment"># copy code from recipe editor, persist, load into mu</span> +<span class="Comment"># replaced in a later layer</span> +<span class="muRecipe">recipe</span> update-recipes [ + <span class="Constant">local-scope</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + recipes:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span> + in:address:array:character<span class="Special"> <- </span>editor-contents recipes + save <span class="Constant">[recipes.mu]</span>, in + reload in + <span class="muControl">reply</span> <span class="Constant">0/no-errors-found</span>, env/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span> +] + +<span class="Comment"># replaced in a later layer</span> +<span class="muRecipe">recipe</span> update-sandbox [ + <span class="Constant">local-scope</span> + sandbox:address:sandbox-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + data:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">data:offset</span> + response:address:address:array:character<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">response:offset</span> + fake-screen:address:address:screen<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">screen:offset</span> + *response, _, *fake-screen<span class="Special"> <- </span>run-interactive data +] + +<span class="muRecipe">recipe</span> update-status [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + msg:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + color:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen<span class="Special"> <- </span>move-cursor screen, <span class="Constant">0</span>, <span class="Constant">2</span> + screen<span class="Special"> <- </span>print-string screen, msg, color, <span class="Constant">238/grey/background</span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muRecipe">recipe</span> save-sandboxes [ + <span class="Constant">local-scope</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + current-sandbox:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + <span class="Comment"># first clear previous versions, in case we deleted some sandbox</span> + $system <span class="Constant">[rm lesson/[0-9]</span>* >/dev/null <span class="Constant">2</span>>/dev/null] <span class="Comment"># some shells can't handle '>&'</span> + curr:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + suffix:address:array:character<span class="Special"> <- </span>new <span class="Constant">[.out]</span> + idx:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> curr + data:address:array:character<span class="Special"> <- </span>get *curr, <span class="Constant">data:offset</span> + filename:address:array:character<span class="Special"> <- </span>integer-to-decimal-string idx + save filename, data + <span class="Delimiter">{</span> + expected-response:address:array:character<span class="Special"> <- </span>get *curr, <span class="Constant">expected-response:offset</span> + <span class="muControl">break-unless</span> expected-response + filename<span class="Special"> <- </span>string-append filename, suffix + save filename, expected-response + <span class="Delimiter">}</span> + idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span> + curr<span class="Special"> <- </span>get *curr, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe!</span> render-sandbox-side [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render sandbox side]</span> + current-sandbox:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + left:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">left:offset</span> + right:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">right:offset</span> + row:number, column:number, screen, current-sandbox<span class="Special"> <- </span>render screen, current-sandbox + clear-screen-from screen, row, column, left, right + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + draw-horizontal screen, row, left, right, <span class="Constant">9473/horizontal-double</span> + sandbox:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + row, screen<span class="Special"> <- </span>render-sandboxes screen, sandbox, left, right, row + clear-rest-of-screen screen, row, left, left, right + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muRecipe">recipe</span> render-sandboxes [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + sandbox:address:sandbox-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">reply-unless</span> sandbox, row/same-as-ingredient:<span class="Constant">4</span>, screen/same-as-ingredient:<span class="Constant">0</span> + screen-height:number<span class="Special"> <- </span>screen-height screen + at-bottom?:boolean<span class="Special"> <- </span>greater-or-equal row, screen-height + <span class="muControl">reply-if</span> at-bottom?:boolean, row/same-as-ingredient:<span class="Constant">4</span>, screen/same-as-ingredient:<span class="Constant">0</span> + <span class="Comment"># render sandbox menu</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + screen<span class="Special"> <- </span>move-cursor screen, row, left + clear-line-delimited screen, left, right + print-character screen, <span class="Constant">120/x</span>, <span class="Constant">245/grey</span> + <span class="Comment"># save menu row so we can detect clicks to it later</span> + starting-row:address:number<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">starting-row-on-screen:offset</span> + *starting-row<span class="Special"> <- </span>copy row + <span class="Comment"># render sandbox contents</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + screen<span class="Special"> <- </span>move-cursor screen, row, left + sandbox-data:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">data:offset</span> + row, screen<span class="Special"> <- </span>render-code-string screen, sandbox-data, left, right, row + code-ending-row:address:number<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">code-ending-row-on-screen:offset</span> + *code-ending-row<span class="Special"> <- </span>copy row + <span class="Comment"># render sandbox warnings, screen or response, in that order</span> + response-starting-row:address:number<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">response-starting-row-on-screen:offset</span> + sandbox-response:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">response:offset</span> +<span class="Constant"> <render-sandbox-results></span> + <span class="Delimiter">{</span> + sandbox-screen:address<span class="Special"> <- </span>get *sandbox, <span class="Constant">screen:offset</span> + empty-screen?:boolean<span class="Special"> <- </span>fake-screen-is-empty? sandbox-screen + <span class="muControl">break-if</span> empty-screen? + row, screen<span class="Special"> <- </span>render-screen screen, sandbox-screen, left, right, row + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> empty-screen? + *response-starting-row<span class="Special"> <- </span>copy row +<span class="Constant"> <render-sandbox-response></span> + row, screen<span class="Special"> <- </span>render-string screen, sandbox-response, left, right, <span class="Constant">245/grey</span>, row + <span class="Delimiter">}</span> +<span class="Constant"> +render-sandbox-end</span> + at-bottom?:boolean<span class="Special"> <- </span>greater-or-equal row, screen-height + <span class="muControl">reply-if</span> at-bottom?, row/same-as-ingredient:<span class="Constant">4</span>, screen/same-as-ingredient:<span class="Constant">0</span> + <span class="Comment"># draw solid line after sandbox</span> + draw-horizontal screen, row, left, right, <span class="Constant">9473/horizontal-double</span> + <span class="Comment"># draw next sandbox</span> + next-sandbox:address:sandbox-data<span class="Special"> <- </span>get *sandbox, <span class="Constant">next-sandbox:offset</span> + row, screen<span class="Special"> <- </span>render-sandboxes screen, next-sandbox, left, right, row + <span class="muControl">reply</span> row/same-as-ingredient:<span class="Constant">4</span>, screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="Comment"># assumes programming environment has no sandboxes; restores them from previous session</span> +<span class="muRecipe">recipe</span> restore-sandboxes [ + <span class="Constant">local-scope</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># read all scenarios, pushing them to end of a list of scenarios</span> + suffix:address:array:character<span class="Special"> <- </span>new <span class="Constant">[.out]</span> + idx:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + curr:address:address:sandbox-data<span class="Special"> <- </span>get-address *env, <span class="Constant">sandbox:offset</span> + <span class="Delimiter">{</span> + filename:address:array:character<span class="Special"> <- </span>integer-to-decimal-string idx + contents:address:array:character<span class="Special"> <- </span>restore filename + <span class="muControl">break-unless</span> contents <span class="Comment"># stop at first error; assuming file didn't exist</span> + <span class="Comment"># create new sandbox for file</span> + *curr<span class="Special"> <- </span>new <span class="Constant">sandbox-data:type</span> + data:address:address:array:character<span class="Special"> <- </span>get-address **curr, <span class="Constant">data:offset</span> + *data<span class="Special"> <- </span>copy contents + <span class="Comment"># restore expected output for sandbox if it exists</span> + <span class="Delimiter">{</span> + filename<span class="Special"> <- </span>string-append filename, suffix + contents<span class="Special"> <- </span>restore filename + <span class="muControl">break-unless</span> contents + expected-response:address:address:array:character<span class="Special"> <- </span>get-address **curr, <span class="Constant">expected-response:offset</span> + *expected-response<span class="Special"> <- </span>copy contents + <span class="Delimiter">}</span> +<span class="Constant"> +continue</span> + idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span> + curr<span class="Special"> <- </span>get-address **curr, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> env/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="Comment"># row, screen <- render-screen screen:address, sandbox-screen:address, left:number, right:number, row:number</span> +<span class="Comment"># print the fake sandbox screen to 'screen' with appropriate delimiters</span> +<span class="Comment"># leave cursor at start of next line</span> +<span class="muRecipe">recipe</span> render-screen [ + <span class="Constant">local-scope</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + s:address:screen<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="muControl">reply-unless</span> s, row/same-as-ingredient:<span class="Constant">4</span>, screen/same-as-ingredient:<span class="Constant">0</span> + <span class="Comment"># print 'screen:'</span> + header:address:array:character<span class="Special"> <- </span>new <span class="Constant">[screen:]</span> + row<span class="Special"> <- </span>render-string screen, header, left, right, <span class="Constant">245/grey</span>, row + screen<span class="Special"> <- </span>move-cursor screen, row, left + <span class="Comment"># start printing s</span> + column:number<span class="Special"> <- </span>copy left + s-width:number<span class="Special"> <- </span>screen-width s + s-height:number<span class="Special"> <- </span>screen-height s + buf:address:array:screen-cell<span class="Special"> <- </span>get *s, <span class="Constant">data:offset</span> + stop-printing:number<span class="Special"> <- </span>add left, s-width, <span class="Constant">3</span> + max-column:number<span class="Special"> <- </span>min stop-printing, right + i:number<span class="Special"> <- </span>copy <span class="Constant">0</span> + len:number<span class="Special"> <- </span>length *buf + screen-height:number<span class="Special"> <- </span>screen-height screen + <span class="Delimiter">{</span> + done?:boolean<span class="Special"> <- </span>greater-or-equal i, len + <span class="muControl">break-if</span> done? + done?<span class="Special"> <- </span>greater-or-equal row, screen-height + <span class="muControl">break-if</span> done? + column<span class="Special"> <- </span>copy left + screen<span class="Special"> <- </span>move-cursor screen, row, column + <span class="Comment"># initial leader for each row: two spaces and a '.'</span> + print-character screen, <span class="Constant">32/space</span>, <span class="Constant">245/grey</span> + print-character screen, <span class="Constant">32/space</span>, <span class="Constant">245/grey</span> + print-character screen, <span class="Constant">46/full-stop</span>, <span class="Constant">245/grey</span> + column<span class="Special"> <- </span>add left, <span class="Constant">3</span> + <span class="Delimiter">{</span> + <span class="Comment"># print row</span> + row-done?:boolean<span class="Special"> <- </span>greater-or-equal column, max-column + <span class="muControl">break-if</span> row-done? + curr:screen-cell<span class="Special"> <- </span>index *buf, i + c:character<span class="Special"> <- </span>get curr, <span class="Constant">contents:offset</span> + color:number<span class="Special"> <- </span>get curr, <span class="Constant">color:offset</span> + <span class="Delimiter">{</span> + <span class="Comment"># damp whites down to grey</span> + white?:boolean<span class="Special"> <- </span>equal color, <span class="Constant">7/white</span> + <span class="muControl">break-unless</span> white? + color<span class="Special"> <- </span>copy <span class="Constant">245/grey</span> + <span class="Delimiter">}</span> + print-character screen, c, color + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + i<span class="Special"> <- </span>add i, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># print final '.'</span> + print-character screen, <span class="Constant">46/full-stop</span>, <span class="Constant">245/grey</span> + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="Delimiter">{</span> + <span class="Comment"># clear rest of current line</span> + line-done?:boolean<span class="Special"> <- </span>greater-than column, right + <span class="muControl">break-if</span> line-done? + print-character screen, <span class="Constant">32/space</span> + column<span class="Special"> <- </span>add column, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + row<span class="Special"> <- </span>add row, <span class="Constant">1</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> row/same-as-ingredient:<span class="Constant">4</span>, screen/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muScenario">scenario</span> run-updates-results [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">12/height</span> + <span class="Comment"># define a recipe (no indent for the 'add' line below so column numbers are more obvious)</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant">z:number <- add 2, 2</span> +<span class="Constant">]</span>] + <span class="Comment"># sandbox editor contains an instruction without storing outputs</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># run the code in the editors</span> + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># check that screen prints the results</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> .z:number <- add 2, 2 ┊ x.</span> + <span class="Constant"> .] ┊foo .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊4 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># make a change (incrementing one of the args to 'add'), then rerun</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">28</span> <span class="Comment"># one past the value of the second arg</span> + press backspace + type <span class="Constant">[3]</span> + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># check that screen updates the result on the right</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> .z:number <- add 2, 3 ┊ x.</span> + <span class="Constant"> .] ┊foo .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊5 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> run-instruction-manages-screen-per-sandbox [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">20/height</span> + <span class="Comment"># left editor is empty</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Comment"># right editor contains an instruction</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[print-integer screen:address, 4]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># run the code in the editor</span> + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># check that it prints a little toy screen</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊print-integer screen:address, 4 .</span> + <span class="Constant"> . ┊screen: .</span> + <span class="Constant"> . ┊ .4 . .</span> + <span class="Constant"> . ┊ . . .</span> + <span class="Constant"> . ┊ . . .</span> + <span class="Constant"> . ┊ . . .</span> + <span class="Constant"> . ┊ . . .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muRecipe">recipe</span> editor-contents [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + buf:address:buffer<span class="Special"> <- </span>new-buffer <span class="Constant">80</span> + curr:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span> + <span class="Comment"># skip § sentinel</span> + assert curr, <span class="Constant">[editor without data is illegal; must have at least a sentinel]</span> + curr<span class="Special"> <- </span>next-duplex curr + <span class="muControl">reply-unless</span> curr, <span class="Constant">0</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> curr + c:character<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span> + buffer-append buf, c + curr<span class="Special"> <- </span>next-duplex curr + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + result:address:array:character<span class="Special"> <- </span>buffer-to-array buf + <span class="muControl">reply</span> result +] + +<span class="muScenario">scenario</span> editor-provides-edited-contents [ + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">2</span> + type <span class="Constant">[def]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:address:array:character<span class="Special"> <- </span>editor-contents <span class="Constant">2</span>:address:editor-data + <span class="Constant">4</span>:array:character<span class="Special"> <- </span>copy *<span class="Constant">3</span>:address:array:character + ] + memory-should-contain [ + <span class="Constant">4</span>:string<span class="Special"> <- </span><span class="Constant">[abdefc]</span> + ] +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/006-sandbox-edit.mu.html b/html/edit/006-sandbox-edit.mu.html new file mode 100644 index 00000000..e5c2d430 --- /dev/null +++ b/html/edit/006-sandbox-edit.mu.html @@ -0,0 +1,212 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/006-sandbox-edit.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muScenario { color: #00af00; } +.Special { color: #ff6060; } +.muRecipe { color: #ff8700; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## editing sandboxes after they've been created</span> + +<span class="muScenario">scenario</span> clicking-on-a-sandbox-moves-it-to-editor [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">40/width</span>, <span class="Constant">10/height</span> + <span class="Comment"># basic recipe</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> add 2, 2</span> +<span class="Constant">]</span>] + <span class="Comment"># run it</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + assume-console [ + press F4 + ] + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . add 2, 2 ┊ x.</span> + <span class="Constant"> .] ┊foo .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊4 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># click somewhere on the sandbox</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">30</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># it pops back into editor</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊foo .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . add 2, 2 ┊ .</span> + <span class="Constant"> .] ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊ .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊0foo .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . add 2, 2 ┊ .</span> + <span class="Constant"> .] ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊ .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><global-touch></span> [ + <span class="Comment"># right side of screen and below sandbox editor? pop appropriate sandbox</span> + <span class="Comment"># contents back into sandbox editor provided it's empty</span> + <span class="Delimiter">{</span> + sandbox-left-margin:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">left:offset</span> + click-column:number<span class="Special"> <- </span>get *t, <span class="Constant">column:offset</span> + on-sandbox-side?:boolean<span class="Special"> <- </span>greater-or-equal click-column, sandbox-left-margin + <span class="muControl">break-unless</span> on-sandbox-side? + first-sandbox:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + <span class="muControl">break-unless</span> first-sandbox + first-sandbox-begins:number<span class="Special"> <- </span>get *first-sandbox, <span class="Constant">starting-row-on-screen:offset</span> + click-row:number<span class="Special"> <- </span>get *t, <span class="Constant">row:offset</span> + below-sandbox-editor?:boolean<span class="Special"> <- </span>greater-or-equal click-row, first-sandbox-begins + <span class="muControl">break-unless</span> below-sandbox-editor? + empty-sandbox-editor?:boolean<span class="Special"> <- </span>empty-editor? current-sandbox + <span class="muControl">break-unless</span> empty-sandbox-editor? <span class="Comment"># make the user hit F4 before editing a new sandbox</span> + <span class="Comment"># identify the sandbox to edit and remove it from the sandbox list</span> + sandbox:address:sandbox-data<span class="Special"> <- </span>extract-sandbox env, click-row + text:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">data:offset</span> + current-sandbox<span class="Special"> <- </span>insert-text current-sandbox, text + hide-screen screen + screen<span class="Special"> <- </span>render-sandbox-side screen, env + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus? + show-screen screen + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> empty-editor? [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + head:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span> + first:address:duplex-list<span class="Special"> <- </span>next-duplex head + result:boolean<span class="Special"> <- </span>not first + <span class="muControl">reply</span> result +] + +<span class="muRecipe">recipe</span> extract-sandbox [ + <span class="Constant">local-scope</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + click-row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># assert click-row >= sandbox.starting-row-on-screen</span> + sandbox:address:address:sandbox-data<span class="Special"> <- </span>get-address *env, <span class="Constant">sandbox:offset</span> + start:number<span class="Special"> <- </span>get **sandbox, <span class="Constant">starting-row-on-screen:offset</span> + clicked-on-sandboxes?:boolean<span class="Special"> <- </span>greater-or-equal click-row, start + assert clicked-on-sandboxes?, <span class="Constant">[extract-sandbox called on click to sandbox editor]</span> + <span class="Delimiter">{</span> + next-sandbox:address:sandbox-data<span class="Special"> <- </span>get **sandbox, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">break-unless</span> next-sandbox + <span class="Comment"># if click-row < sandbox.next-sandbox.starting-row-on-screen, break</span> + next-start:number<span class="Special"> <- </span>get *next-sandbox, <span class="Constant">starting-row-on-screen:offset</span> + found?:boolean<span class="Special"> <- </span>lesser-than click-row, next-start + <span class="muControl">break-if</span> found? + sandbox<span class="Special"> <- </span>get-address **sandbox, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># snip sandbox out of its list</span> + result:address:sandbox-data<span class="Special"> <- </span>copy *sandbox + *sandbox<span class="Special"> <- </span>copy next-sandbox + <span class="Comment"># position cursor in sandbox editor</span> + sandbox-in-focus?:address:boolean<span class="Special"> <- </span>get-address *env, <span class="Constant">sandbox-in-focus?:offset</span> + *sandbox-in-focus?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> + <span class="muControl">reply</span> result +] + +<span class="muScenario">scenario</span> sandbox-with-print-can-be-edited [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">20/height</span> + <span class="Comment"># left editor is empty</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Comment"># right editor contains an instruction</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[print-integer screen:address, 4]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># run the sandbox</span> + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊print-integer screen:address, 4 .</span> + <span class="Constant"> . ┊screen: .</span> + <span class="Constant"> . ┊ .4 . .</span> + <span class="Constant"> . ┊ . . .</span> + <span class="Constant"> . ┊ . . .</span> + <span class="Constant"> . ┊ . . .</span> + <span class="Constant"> . ┊ . . .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># edit the sandbox</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">70</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊print-integer screen:address, 4 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊ .</span> + ] +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/007-sandbox-delete.mu.html b/html/edit/007-sandbox-delete.mu.html new file mode 100644 index 00000000..5f3cdfcf --- /dev/null +++ b/html/edit/007-sandbox-delete.mu.html @@ -0,0 +1,149 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/007-sandbox-delete.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muScenario { color: #00af00; } +.Special { color: #ff6060; } +.muRecipe { color: #ff8700; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## deleting sandboxes</span> + +<span class="muScenario">scenario</span> deleting-sandboxes [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># run a few commands</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">80</span> + type <span class="Constant">[divide-with-remainder 11, 3]</span> + press F4 + type <span class="Constant">[add 2, 2]</span> + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊add 2, 2 .</span> + <span class="Constant"> . ┊4 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊divide-with-remainder 11, 3 .</span> + <span class="Constant"> . ┊3 .</span> + <span class="Constant"> . ┊2 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># delete second sandbox</span> + assume-console [ + left-click <span class="Constant">7</span>, <span class="Constant">99</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊add 2, 2 .</span> + <span class="Constant"> . ┊4 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># delete first sandbox</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">99</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><global-touch></span> [ + <span class="Comment"># on a sandbox delete icon? process delete</span> + <span class="Delimiter">{</span> + was-delete?:boolean<span class="Special"> <- </span>delete-sandbox *t, env + <span class="muControl">break-unless</span> was-delete? + hide-screen screen + screen<span class="Special"> <- </span>render-sandbox-side screen, env + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus? + show-screen screen + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># was-deleted?:boolean <- delete-sandbox t:touch-event, env:address:programming-environment-data</span> +<span class="muRecipe">recipe</span> delete-sandbox [ + <span class="Constant">local-scope</span> + t:touch-event<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + click-column:number<span class="Special"> <- </span>get t, <span class="Constant">column:offset</span> + current-sandbox:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span> + right:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">right:offset</span> + at-right?:boolean<span class="Special"> <- </span>equal click-column, right + <span class="muControl">reply-unless</span> at-right?, <span class="Constant">0/false</span> + click-row:number<span class="Special"> <- </span>get t, <span class="Constant">row:offset</span> + prev:address:address:sandbox-data<span class="Special"> <- </span>get-address *env, <span class="Constant">sandbox:offset</span> + curr:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> curr + <span class="Comment"># more sandboxes to check</span> + <span class="Delimiter">{</span> + target-row:number<span class="Special"> <- </span>get *curr, <span class="Constant">starting-row-on-screen:offset</span> + delete-curr?:boolean<span class="Special"> <- </span>equal target-row, click-row + <span class="muControl">break-unless</span> delete-curr? + <span class="Comment"># delete this sandbox, rerender and stop</span> + *prev<span class="Special"> <- </span>get *curr, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">reply</span> <span class="Constant">1/true</span> + <span class="Delimiter">}</span> + prev<span class="Special"> <- </span>get-address *curr, <span class="Constant">next-sandbox:offset</span> + curr<span class="Special"> <- </span>get *curr, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> <span class="Constant">0/false</span> +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/008-sandbox-test.mu.html b/html/edit/008-sandbox-test.mu.html new file mode 100644 index 00000000..0cdd6a08 --- /dev/null +++ b/html/edit/008-sandbox-test.mu.html @@ -0,0 +1,211 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/008-sandbox-test.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muScenario { color: #00af00; } +.Special { color: #ff6060; } +.muRecipe { color: #ff8700; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## clicking on sandbox results to 'fix' them and turn sandboxes into tests</span> + +<span class="muScenario">scenario</span> sandbox-click-on-result-toggles-color-to-green [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">40/width</span>, <span class="Constant">10/height</span> + <span class="Comment"># basic recipe</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> add 2, 2</span> +<span class="Constant">]</span>] + <span class="Comment"># run it</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + assume-console [ + press F4 + ] + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . add 2, 2 ┊ x.</span> + <span class="Constant"> .] ┊foo .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊4 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># click on the '4' in the result</span> + assume-console [ + left-click <span class="Constant">5</span>, <span class="Constant">21</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># color toggles to green</span> + screen-should-contain-in-color <span class="Constant">2/green</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . 4 .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># cursor should remain unmoved</span> + run [ + print-character screen:address, <span class="Constant">9251/␣/cursor</span> + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .␣ ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . add 2, 2 ┊ x.</span> + <span class="Constant"> .] ┊foo .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊4 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># now change the second arg of the 'add'</span> + <span class="Comment"># then rerun</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">11</span> <span class="Comment"># cursor to end of line</span> + press backspace + type <span class="Constant">[3]</span> + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># result turns red</span> + screen-should-contain-in-color <span class="Constant">1/red</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . 5 .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># clicks on sandbox responses save it as 'expected'</span> +<span class="muRecipe">after</span> <span class="Constant"><global-touch></span> [ + <span class="Comment"># right side of screen? check if it's inside the output of any sandbox</span> + <span class="Delimiter">{</span> + sandbox-left-margin:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">left:offset</span> + click-column:number<span class="Special"> <- </span>get *t, <span class="Constant">column:offset</span> + on-sandbox-side?:boolean<span class="Special"> <- </span>greater-or-equal click-column, sandbox-left-margin + <span class="muControl">break-unless</span> on-sandbox-side? + first-sandbox:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + <span class="muControl">break-unless</span> first-sandbox + first-sandbox-begins:number<span class="Special"> <- </span>get *first-sandbox, <span class="Constant">starting-row-on-screen:offset</span> + click-row:number<span class="Special"> <- </span>get *t, <span class="Constant">row:offset</span> + below-sandbox-editor?:boolean<span class="Special"> <- </span>greater-or-equal click-row, first-sandbox-begins + <span class="muControl">break-unless</span> below-sandbox-editor? + <span class="Comment"># identify the sandbox whose output is being clicked on</span> + sandbox:address:sandbox-data<span class="Special"> <- </span>find-click-in-sandbox-output env, click-row + <span class="muControl">break-unless</span> sandbox + <span class="Comment"># toggle its expected-response, and save session</span> + sandbox<span class="Special"> <- </span>toggle-expected-response sandbox + save-sandboxes env + hide-screen screen + screen<span class="Special"> <- </span>render-sandbox-side screen, env, <span class="Constant">1/clear</span> + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus? + <span class="Comment"># no change in cursor</span> + show-screen screen + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> find-click-in-sandbox-output [ + <span class="Constant">local-scope</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + click-row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># assert click-row >= sandbox.starting-row-on-screen</span> + sandbox:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + start:number<span class="Special"> <- </span>get *sandbox, <span class="Constant">starting-row-on-screen:offset</span> + clicked-on-sandboxes?:boolean<span class="Special"> <- </span>greater-or-equal click-row, start + assert clicked-on-sandboxes?, <span class="Constant">[extract-sandbox called on click to sandbox editor]</span> + <span class="Comment"># while click-row < sandbox.next-sandbox.starting-row-on-screen</span> + <span class="Delimiter">{</span> + next-sandbox:address:sandbox-data<span class="Special"> <- </span>get *sandbox, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">break-unless</span> next-sandbox + next-start:number<span class="Special"> <- </span>get *next-sandbox, <span class="Constant">starting-row-on-screen:offset</span> + found?:boolean<span class="Special"> <- </span>lesser-than click-row, next-start + <span class="muControl">break-if</span> found? + sandbox<span class="Special"> <- </span>copy next-sandbox + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># return sandbox if click is in its output region</span> + response-starting-row:number<span class="Special"> <- </span>get *sandbox, <span class="Constant">response-starting-row-on-screen:offset</span> + <span class="muControl">reply-unless</span> response-starting-row, <span class="Constant">0/no-click-in-sandbox-output</span> + click-in-response?:boolean<span class="Special"> <- </span>greater-or-equal click-row, response-starting-row + <span class="muControl">reply-unless</span> click-in-response?, <span class="Constant">0/no-click-in-sandbox-output</span> + <span class="muControl">reply</span> sandbox +] + +<span class="muRecipe">recipe</span> toggle-expected-response [ + <span class="Constant">local-scope</span> + sandbox:address:sandbox-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + expected-response:address:address:array:character<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">expected-response:offset</span> + <span class="Delimiter">{</span> + <span class="Comment"># if expected-response is set, reset</span> + <span class="muControl">break-unless</span> *expected-response + *expected-response<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="muControl">reply</span> sandbox/same-as-ingredient:<span class="Constant">0</span> + <span class="Delimiter">}</span> + <span class="Comment"># if not, current response is the expected response</span> + response:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">response:offset</span> + *expected-response<span class="Special"> <- </span>copy response + <span class="muControl">reply</span> sandbox/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="Comment"># when rendering a sandbox, color it in red/green if expected response exists</span> +<span class="muRecipe">after</span> <span class="Constant"><render-sandbox-response></span> [ + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> sandbox-response + expected-response:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">expected-response:offset</span> + <span class="muControl">break-unless</span> expected-response <span class="Comment"># fall-through to print in grey</span> + response-is-expected?:boolean<span class="Special"> <- </span>string-equal expected-response, sandbox-response + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> response-is-expected?:boolean + row, screen<span class="Special"> <- </span>render-string screen, sandbox-response, left, right, <span class="Constant">1/red</span>, row + <span class="Delimiter">}</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> response-is-expected?:boolean + row, screen<span class="Special"> <- </span>render-string screen, sandbox-response, left, right, <span class="Constant">2/green</span>, row + <span class="Delimiter">}</span> + <span class="muControl">jump</span> <span class="Constant">+render-sandbox-end:label</span> + <span class="Delimiter">}</span> +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/009-sandbox-trace.mu.html b/html/edit/009-sandbox-trace.mu.html new file mode 100644 index 00000000..b73fbee6 --- /dev/null +++ b/html/edit/009-sandbox-trace.mu.html @@ -0,0 +1,248 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/009-sandbox-trace.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muScenario { color: #00af00; } +.muData { color: #ffff00; } +.Special { color: #ff6060; } +.muRecipe { color: #ff8700; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## clicking on the code typed into a sandbox toggles its trace</span> + +<span class="muScenario">scenario</span> sandbox-click-on-code-toggles-app-trace [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">40/width</span>, <span class="Constant">10/height</span> + <span class="Comment"># basic recipe</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> stash [abc]</span> +]] + <span class="Comment"># run it</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + assume-console [ + press F4 + ] + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . stash [abc] ┊ x.</span> + <span class="Constant"> .] ┊foo .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># click on the 'foo' line in the sandbox</span> + assume-console [ + left-click <span class="Constant">4</span>, <span class="Constant">21</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + print-character screen:address, <span class="Constant">9251/␣/cursor</span> + ] + <span class="Comment"># trace now printed and cursor shouldn't have budged</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .␣ ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . stash [abc] ┊ x.</span> + <span class="Constant"> .] ┊foo .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊abc .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + screen-should-contain-in-color <span class="Constant">245/grey</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊abc .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># click again on the same region</span> + assume-console [ + left-click <span class="Constant">4</span>, <span class="Constant">25</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + print-character screen:address, <span class="Constant">9251/␣/cursor</span> + ] + <span class="Comment"># trace hidden again</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .␣ ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . stash [abc] ┊ x.</span> + <span class="Constant"> .] ┊foo .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> sandbox-shows-app-trace-and-result [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">40/width</span>, <span class="Constant">10/height</span> + <span class="Comment"># basic recipe</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> stash [abc]</span> + add <span class="Constant">2</span>, <span class="Constant">2</span> +]] + <span class="Comment"># run it</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + assume-console [ + press F4 + ] + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . stash [abc] ┊ x.</span> + <span class="Constant"> . add 2, 2 ┊foo .</span> + <span class="Constant"> .] ┊4 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># click on the 'foo' line in the sandbox</span> + assume-console [ + left-click <span class="Constant">4</span>, <span class="Constant">21</span> + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># trace now printed</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . stash [abc] ┊ x.</span> + <span class="Constant"> . add 2, 2 ┊foo .</span> + <span class="Constant"> .] ┊abc .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊4 .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muData">container</span> sandbox-data [ + trace:address:array:character + display-trace?:boolean +] + +<span class="Comment"># replaced in a later layer</span> +<span class="muRecipe">recipe!</span> update-sandbox [ + <span class="Constant">local-scope</span> + sandbox:address:sandbox-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + data:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">data:offset</span> + response:address:address:array:character<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">response:offset</span> + trace:address:address:array:character<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">trace:offset</span> + fake-screen:address:address:screen<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">screen:offset</span> + *response, _, *fake-screen, *trace<span class="Special"> <- </span>run-interactive data +] + +<span class="Comment"># clicks on sandbox code toggle its display-trace? flag</span> +<span class="muRecipe">after</span> <span class="Constant"><global-touch></span> [ + <span class="Comment"># right side of screen? check if it's inside the code of any sandbox</span> + <span class="Delimiter">{</span> + sandbox-left-margin:number<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">left:offset</span> + click-column:number<span class="Special"> <- </span>get *t, <span class="Constant">column:offset</span> + on-sandbox-side?:boolean<span class="Special"> <- </span>greater-or-equal click-column, sandbox-left-margin + <span class="muControl">break-unless</span> on-sandbox-side? + first-sandbox:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + <span class="muControl">break-unless</span> first-sandbox + first-sandbox-begins:number<span class="Special"> <- </span>get *first-sandbox, <span class="Constant">starting-row-on-screen:offset</span> + click-row:number<span class="Special"> <- </span>get *t, <span class="Constant">row:offset</span> + below-sandbox-editor?:boolean<span class="Special"> <- </span>greater-or-equal click-row, first-sandbox-begins + <span class="muControl">break-unless</span> below-sandbox-editor? + <span class="Comment"># identify the sandbox whose code is being clicked on</span> + sandbox:address:sandbox-data<span class="Special"> <- </span>find-click-in-sandbox-code env, click-row + <span class="muControl">break-unless</span> sandbox + <span class="Comment"># toggle its display-trace? property</span> + x:address:boolean<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">display-trace?:offset</span> + *x<span class="Special"> <- </span>not *x + hide-screen screen + screen<span class="Special"> <- </span>render-sandbox-side screen, env, <span class="Constant">1/clear</span> + screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, *sandbox-in-focus? + <span class="Comment"># no change in cursor</span> + show-screen screen + <span class="muControl">loop</span> <span class="Constant">+next-event:label</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">recipe</span> find-click-in-sandbox-code [ + <span class="Constant">local-scope</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + click-row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + <span class="Comment"># assert click-row >= sandbox.starting-row-on-screen</span> + sandbox:address:sandbox-data<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span> + start:number<span class="Special"> <- </span>get *sandbox, <span class="Constant">starting-row-on-screen:offset</span> + clicked-on-sandboxes?:boolean<span class="Special"> <- </span>greater-or-equal click-row, start + assert clicked-on-sandboxes?, <span class="Constant">[extract-sandbox called on click to sandbox editor]</span> + <span class="Comment"># while click-row < sandbox.next-sandbox.starting-row-on-screen</span> + <span class="Delimiter">{</span> + next-sandbox:address:sandbox-data<span class="Special"> <- </span>get *sandbox, <span class="Constant">next-sandbox:offset</span> + <span class="muControl">break-unless</span> next-sandbox + next-start:number<span class="Special"> <- </span>get *next-sandbox, <span class="Constant">starting-row-on-screen:offset</span> + found?:boolean<span class="Special"> <- </span>lesser-than click-row, next-start + <span class="muControl">break-if</span> found? + sandbox<span class="Special"> <- </span>copy next-sandbox + <span class="muControl">loop</span> + <span class="Delimiter">}</span> + <span class="Comment"># return sandbox if click is in its code region</span> + code-ending-row:number<span class="Special"> <- </span>get *sandbox, <span class="Constant">code-ending-row-on-screen:offset</span> + click-above-response?:boolean<span class="Special"> <- </span>lesser-than click-row, code-ending-row + start:number<span class="Special"> <- </span>get *sandbox, <span class="Constant">starting-row-on-screen:offset</span> + click-below-menu?:boolean<span class="Special"> <- </span>greater-than click-row, start + click-on-sandbox-code?:boolean<span class="Special"> <- </span>and click-above-response?, click-below-menu? + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> click-on-sandbox-code? + <span class="muControl">reply</span> <span class="Constant">0/no-click-in-sandbox-output</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> sandbox +] + +<span class="Comment"># when rendering a sandbox, dump its trace before response/warning if display-trace? property is set</span> +<span class="muRecipe">after</span> <span class="Constant"><render-sandbox-results></span> [ + <span class="Delimiter">{</span> + display-trace?:boolean<span class="Special"> <- </span>get *sandbox, <span class="Constant">display-trace?:offset</span> + <span class="muControl">break-unless</span> display-trace? + sandbox-trace:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">trace:offset</span> + <span class="muControl">break-unless</span> sandbox-trace <span class="Comment"># nothing to print; move on</span> + row, screen<span class="Special"> <- </span>render-string, screen, sandbox-trace, left, right, <span class="Constant">245/grey</span>, row + <span class="Delimiter">}</span> +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git 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+.muScenario { color: #00af00; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## handling malformed programs</span> + +<span class="muData">container</span> programming-environment-data [ + recipe-warnings:address:array:character +] + +<span class="Comment"># copy code from recipe editor, persist, load into mu, save any warnings</span> +<span class="muRecipe">recipe!</span> update-recipes [ + <span class="Constant">local-scope</span> + env:address:programming-environment-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + recipes:address:editor-data<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span> + in:address:array:character<span class="Special"> <- </span>editor-contents recipes + save <span class="Constant">[recipes.mu]</span>, in + recipe-warnings:address:address:array:character<span class="Special"> <- </span>get-address *env, <span class="Constant">recipe-warnings:offset</span> + *recipe-warnings<span class="Special"> <- </span>reload in + <span class="Comment"># if recipe editor has errors, stop</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> *recipe-warnings + status:address:array:character<span class="Special"> <- </span>new <span class="Constant">[errors found]</span> + update-status screen, status, <span class="Constant">1/red</span> + <span class="muControl">reply</span> <span class="Constant">1/errors-found</span>, env/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span> + <span class="Delimiter">}</span> + <span class="muControl">reply</span> <span class="Constant">0/no-errors-found</span>, env/same-as-ingredient:<span class="Constant">0</span>, screen/same-as-ingredient:<span class="Constant">1</span> +] + +<span class="muRecipe">before</span> <span class="Constant"><render-components-end></span> [ + trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render status]</span> + recipe-warnings:address:array:character<span class="Special"> <- </span>get *env, <span class="Constant">recipe-warnings:offset</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> recipe-warnings + status:address:array:character<span class="Special"> <- </span>new <span class="Constant">[errors found]</span> + update-status screen, status, <span class="Constant">1/red</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">before</span> <span class="Constant"><render-recipe-components-end></span> [ + <span class="Delimiter">{</span> + recipe-warnings:address:array:character<span class="Special"> <- </span>get *env, <span class="Constant">recipe-warnings:offset</span> + <span class="muControl">break-unless</span> recipe-warnings + row, screen<span class="Special"> <- </span>render-string screen, recipe-warnings, left, right, <span class="Constant">1/red</span>, row + <span class="Delimiter">}</span> +] + +<span class="muData">container</span> sandbox-data [ + warnings:address:array:character +] + +<span class="muRecipe">recipe!</span> update-sandbox [ + <span class="Constant">local-scope</span> + sandbox:address:sandbox-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + data:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">data:offset</span> + response:address:address:array:character<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">response:offset</span> + warnings:address:address:array:character<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">warnings:offset</span> + trace:address:address:array:character<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">trace:offset</span> + fake-screen:address:address:screen<span class="Special"> <- </span>get-address *sandbox, <span class="Constant">screen:offset</span> + *response, *warnings, *fake-screen, *trace, completed?:boolean<span class="Special"> <- </span>run-interactive data + <span class="Delimiter">{</span> + <span class="muControl">break-if</span> *warnings + <span class="muControl">break-if</span> completed?:boolean + *warnings<span class="Special"> <- </span>new <span class="Constant">[took too long!</span> +<span class="Constant">]</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><render-sandbox-results></span> [ + <span class="Delimiter">{</span> + sandbox-warnings:address:array:character<span class="Special"> <- </span>get *sandbox, <span class="Constant">warnings:offset</span> + <span class="muControl">break-unless</span> sandbox-warnings + *response-starting-row<span class="Special"> <- </span>copy <span class="Constant">0</span> <span class="Comment"># no response</span> + row, screen<span class="Special"> <- </span>render-string screen, sandbox-warnings, left, right, <span class="Constant">1/red</span>, row + <span class="muControl">jump</span> <span class="Constant">+render-sandbox-end:label</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> run-shows-warnings-in-get [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> get 123:number, foo:offset</span> +<span class="Constant">]</span>] + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . errors found run (F4) .</span> + <span class="Constant"> . ┊foo .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . get 123:number, foo:offset ┊ .</span> + <span class="Constant"> .] ┊ .</span> + <span class="Constant"> .unknown element foo in container number ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊ .</span> + <span class="Constant"> . ┊ .</span> + ] + screen-should-contain-in-color <span class="Constant">1/red</span>, [ + <span class="Constant"> . errors found .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> .unknown element foo in container number .</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> run-shows-missing-type-warnings [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> x <- copy 0</span> +<span class="Constant">]</span>] + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . errors found run (F4) .</span> + <span class="Constant"> . ┊foo .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . x <- copy 0 ┊ .</span> + <span class="Constant"> .] ┊ .</span> + <span class="Constant"> .missing type in 'x <- copy 0' ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊ .</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> run-shows-unbalanced-bracket-warnings [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span> + <span class="Comment"># recipe is incomplete (unbalanced '[')</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo «</span> +<span class="Constant"> x <- copy 0</span> +<span class="Constant">]</span> + string-replace <span class="Constant">1</span>:address:array:character, <span class="Constant">171/«</span>, <span class="Constant">91</span> <span class="Comment"># '['</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . errors found run (F4) .</span> + <span class="Constant"> . ┊foo .</span> + <span class="Constant"> .recipe foo \\\[ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . x <- copy 0 ┊ .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .9: unbalanced '\\\[' for recipe ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊ .</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> run-shows-get-on-non-container-warnings [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> x:address:point <- new point:type</span> +<span class="Constant"> get x:address:point, 1:offset</span> +<span class="Constant">]</span>] + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . x:address:point <- new point:type ┊ x.</span> + <span class="Constant"> . get x:address:point, 1:offset ┊foo .</span> + <span class="Constant"> .] ┊foo: first ingredient of 'get' should be a conta↩.</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊iner, but got x:address:point .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> run-shows-non-literal-get-argument-warnings [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> x:number <- copy 0</span> +<span class="Constant"> y:address:point <- new point:type</span> +<span class="Constant"> get *y:address:point, x:number</span> +<span class="Constant">]</span>] + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . errors found run (F4) .</span> + <span class="Constant"> . ┊foo .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . x:number <- copy 0 ┊ .</span> + <span class="Constant"> . y:address:point <- new point:type ┊ .</span> + <span class="Constant"> . get *y:address:point, x:number ┊ .</span> + <span class="Constant"> .] ┊ .</span> + <span class="Constant"> .foo: expected ingredient 1 of 'get' to have type ↩┊ .</span> + <span class="Constant"> .'offset'; got x:number ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊ .</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> run-shows-warnings-everytime [ + $close-trace <span class="Comment"># trace too long</span> + <span class="Comment"># try to run a file with an error</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ </span> +<span class="Constant">recipe foo [</span> +<span class="Constant"> x:number <- copy y:number</span> +<span class="Constant">]</span>] + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . errors found run (F4) .</span> + <span class="Constant"> . ┊foo .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . x:number <- copy y:number ┊ .</span> + <span class="Constant"> .] ┊ .</span> + <span class="Constant"> .use before set: y in foo ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊ .</span> + <span class="Constant"> . ┊ .</span> + ] + <span class="Comment"># rerun the file, check for the same error</span> + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . errors found run (F4) .</span> + <span class="Constant"> . ┊foo .</span> + <span class="Constant"> .recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . x:number <- copy y:number ┊ .</span> + <span class="Constant"> .] ┊ .</span> + <span class="Constant"> .use before set: y in foo ┊ .</span> + <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊ .</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> run-instruction-and-print-warnings [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span> + <span class="Comment"># left editor is empty</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Comment"># right editor contains an illegal instruction</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[get 1234:number, foo:offset]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># run the code in the editors</span> + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># check that screen prints error message in red</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊get 1234:number, foo:offset .</span> + <span class="Constant"> . ┊unknown element foo in container number .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] + screen-should-contain-in-color <span class="Constant">7/white</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . get 1234:number, foo:offset .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + ] + screen-should-contain-in-color <span class="Constant">1/red</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> + <span class="Constant"> . unknown element foo in container number .</span> + <span class="Constant"> . .</span> + ] + screen-should-contain-in-color <span class="Constant">245/grey</span>, [ + <span class="Constant"> . .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊ .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> run-instruction-and-print-warnings-only-once [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span> + <span class="Comment"># left editor is empty</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Comment"># right editor contains an illegal instruction</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[get 1234:number, foo:offset]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># run the code in the editors multiple times</span> + assume-console [ + press F4 + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + <span class="Comment"># check that screen prints error message just once</span> + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> . ┊ .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ x.</span> + <span class="Constant"> . ┊get 1234:number, foo:offset .</span> + <span class="Constant"> . ┊unknown element foo in container number .</span> + <span class="Constant"> . ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] + +<span class="muScenario">scenario</span> sandbox-can-handle-infinite-loop [ + $close-trace <span class="Comment"># trace too long</span> + assume-screen <span class="Constant">100/width</span>, <span class="Constant">20/height</span> + <span class="Comment"># left editor is empty</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[recipe foo [</span> +<span class="Constant"> {</span> +<span class="Constant"> loop</span> +<span class="Constant"> }</span> +<span class="Constant">]</span>] + <span class="Comment"># right editor contains an instruction</span> + <span class="Constant">2</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[foo]</span> + <span class="Constant">3</span>:address:programming-environment-data<span class="Special"> <- </span>new-programming-environment screen:address, <span class="Constant">1</span>:address:array:character, <span class="Constant">2</span>:address:array:character + <span class="Comment"># run the sandbox</span> + assume-console [ + press F4 + ] + run [ + event-loop screen:address, console:address, <span class="Constant">3</span>:address:programming-environment-data + ] + screen-should-contain [ + <span class="Constant"> . run (F4) .</span> + <span class="Constant"> .recipe foo [ ┊ .</span> + <span class="Constant"> . { ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . loop ┊ x.</span> + <span class="Constant"> . } ┊foo .</span> + <span class="Constant"> .] ┊took too long! .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.</span> + <span class="Constant"> . ┊ .</span> + ] +] +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> diff --git a/html/edit/011-editor-undo.mu.html b/html/edit/011-editor-undo.mu.html new file mode 100644 index 00000000..37417b7f --- /dev/null +++ b/html/edit/011-editor-undo.mu.html @@ -0,0 +1,2095 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - edit/011-editor-undo.mu</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<meta name="syntax" content="none"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.muRecipe { color: #ff8700; } +.muData { color: #ffff00; } +.Special { color: #ff6060; } +.muScenario { color: #00af00; } +.Comment { color: #9090ff; } +.Constant { color: #00a0a0; } +.SalientComment { color: #00ffff; } +.Delimiter { color: #a04060; } +.muControl { color: #c0a020; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="SalientComment">## undo/redo</span> + +<span class="Comment"># for every undoable event, create a type of *operation* that contains all the</span> +<span class="Comment"># information needed to reverse it</span> +<span class="muData">exclusive-container</span> operation [ + typing:insert-operation + move:move-operation + delete:delete-operation +] + +<span class="muData">container</span> insert-operation [ + before-row:number + before-column:number + before-top-of-screen:address:duplex-list:character + after-row:number + after-column:number + after-top-of-screen:address:duplex-list:character + <span class="Comment"># inserted text is from 'insert-from' until 'insert-until'; list doesn't have to terminate</span> + insert-from:address:duplex-list:character + insert-until:address:duplex-list:character + tag:number <span class="Comment"># event causing this operation; might be used to coalesce runs of similar events</span> + <span class="Comment"># 0: no coalesce (enter+indent)</span> + <span class="Comment"># 1: regular alphanumeric characters</span> +] + +<span class="muData">container</span> move-operation [ + before-row:number + before-column:number + before-top-of-screen:address:duplex-list:character + after-row:number + after-column:number + after-top-of-screen:address:duplex-list:character + tag:number <span class="Comment"># event causing this operation; might be used to coalesce runs of similar events</span> + <span class="Comment"># 0: no coalesce (touch events, etc)</span> + <span class="Comment"># 1: left arrow</span> + <span class="Comment"># 2: right arrow</span> + <span class="Comment"># 3: up arrow</span> + <span class="Comment"># 4: down arrow</span> +] + +<span class="muData">container</span> delete-operation [ + before-row:number + before-column:number + before-top-of-screen:address:duplex-list:character + after-row:number + after-column:number + after-top-of-screen:address:duplex-list:character + deleted-text:address:duplex-list:character + delete-from:address:duplex-list:character + delete-until:address:duplex-list:character + tag:number <span class="Comment"># event causing this operation; might be used to coalesce runs of similar events</span> + <span class="Comment"># 0: no coalesce (ctrl-k, ctrl-u)</span> + <span class="Comment"># 1: backspace</span> + <span class="Comment"># 2: delete</span> +] + +<span class="Comment"># every editor accumulates a list of operations to undo/redo</span> +<span class="muData">container</span> editor-data [ + undo:address:list:address:operation + redo:address:list:address:operation +] + +<span class="Comment"># ctrl-z - undo operation</span> +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + undo?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">26/ctrl-z</span> + <span class="muControl">break-unless</span> undo? + undo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + <span class="muControl">break-unless</span> *undo + op:address:operation<span class="Special"> <- </span>first *undo + *undo<span class="Special"> <- </span>rest *undo + redo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> + *redo<span class="Special"> <- </span>push op, *redo +<span class="Constant"> <handle-undo></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># ctrl-y - redo operation</span> +<span class="muRecipe">after</span> <span class="Constant"><handle-special-character></span> [ + <span class="Delimiter">{</span> + redo?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">25/ctrl-y</span> + <span class="muControl">break-unless</span> redo? + redo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> + <span class="muControl">break-unless</span> *redo + op:address:operation<span class="Special"> <- </span>first *redo + *redo<span class="Special"> <- </span>rest *redo + undo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + *undo<span class="Special"> <- </span>push op, *undo +<span class="Constant"> <handle-redo></span> + <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># undo typing</span> + +<span class="muScenario">scenario</span> editor-can-undo-typing [ + <span class="Comment"># create an editor and type a character</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + type <span class="Constant">[0]</span> + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># character should be gone</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .1 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># save operation to undo</span> +<span class="muRecipe">after</span> <span class="Constant"><insert-character-begin></span> [ + top-before:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + cursor-before:address:duplex-list<span class="Special"> <- </span>copy *before-cursor +] +<span class="muRecipe">before</span> <span class="Constant"><insert-character-end></span> [ + top-after:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + <span class="Delimiter">{</span> + <span class="Comment"># if previous operation was an insert, coalesce this operation with it</span> + <span class="muControl">break-unless</span> *undo + op:address:operation<span class="Special"> <- </span>first *undo + typing:address:insert-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">typing:variant</span> + <span class="muControl">break-unless</span> typing + previous-coalesce-tag:number<span class="Special"> <- </span>get *typing, <span class="Constant">tag:offset</span> + <span class="muControl">break-unless</span> previous-coalesce-tag + insert-until:address:address:duplex-list<span class="Special"> <- </span>get-address *typing, <span class="Constant">insert-until:offset</span> + *insert-until<span class="Special"> <- </span>next-duplex *before-cursor + after-row:address:number<span class="Special"> <- </span>get-address *typing, <span class="Constant">after-row:offset</span> + *after-row<span class="Special"> <- </span>copy *cursor-row + after-column:address:number<span class="Special"> <- </span>get-address *typing, <span class="Constant">after-column:offset</span> + *after-column<span class="Special"> <- </span>copy *cursor-column + after-top:address:number<span class="Special"> <- </span>get-address *typing, <span class="Constant">after-top-of-screen:offset</span> + *after-top<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + <span class="muControl">break</span> <span class="Constant">+done-adding-insert-operation:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># if not, create a new operation</span> + insert-from:address:duplex-list<span class="Special"> <- </span>next-duplex cursor-before + insert-to:address:duplex-list<span class="Special"> <- </span>next-duplex insert-from + op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + *op<span class="Special"> <- </span>merge <span class="Constant">0/insert-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, insert-from, insert-to, <span class="Constant">1/coalesce</span> + editor<span class="Special"> <- </span>add-operation editor, op +<span class="Constant"> +done-adding-insert-operation</span> +] + +<span class="Comment"># enter operations never coalesce with typing before or after</span> +<span class="muRecipe">after</span> <span class="Constant"><insert-enter-begin></span> [ + cursor-row-before:number<span class="Special"> <- </span>copy *cursor-row + cursor-column-before:number<span class="Special"> <- </span>copy *cursor-column + top-before:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + cursor-before:address:duplex-list<span class="Special"> <- </span>copy *before-cursor +] +<span class="muRecipe">before</span> <span class="Constant"><insert-enter-end></span> [ + top-after:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + <span class="Comment"># never coalesce</span> + insert-from:address:duplex-list<span class="Special"> <- </span>next-duplex cursor-before + insert-to:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + *op<span class="Special"> <- </span>merge <span class="Constant">0/insert-operation</span>, cursor-row-before, cursor-column-before, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, insert-from, insert-to, <span class="Constant">0/never-coalesce</span> + editor<span class="Special"> <- </span>add-operation editor, op +] + +<span class="Comment"># Everytime you add a new operation to the undo stack, be sure to clear the</span> +<span class="Comment"># redo stack, because it's now obsolete.</span> +<span class="Comment"># Beware: since we're counting cursor moves as operations, this means just</span> +<span class="Comment"># moving the cursor can lose work on the undo stack.</span> +<span class="muRecipe">recipe</span> add-operation [ + <span class="Constant">local-scope</span> + editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + op:address:operation<span class="Special"> <- </span><span class="Constant">next-ingredient</span> + undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + *undo<span class="Special"> <- </span>push op *undo + redo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> + *redo<span class="Special"> <- </span>copy <span class="Constant">0</span> + <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-undo></span> [ + <span class="Delimiter">{</span> + typing:address:insert-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">typing:variant</span> + <span class="muControl">break-unless</span> typing + start:address:duplex-list<span class="Special"> <- </span>get *typing, <span class="Constant">insert-from:offset</span> + end:address:duplex-list<span class="Special"> <- </span>get *typing, <span class="Constant">insert-until:offset</span> + <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> + *before-cursor<span class="Special"> <- </span>prev-duplex start + remove-duplex-between *before-cursor, end + *cursor-row<span class="Special"> <- </span>get *typing, <span class="Constant">before-row:offset</span> + *cursor-column<span class="Special"> <- </span>get *typing, <span class="Constant">before-column:offset</span> + top:address:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + *top<span class="Special"> <- </span>get *typing, <span class="Constant">before-top-of-screen:offset</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-can-undo-typing-multiple [ + <span class="Comment"># create an editor and type multiple characters</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + type <span class="Constant">[012]</span> + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># all characters must be gone</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-typing-multiple-2 [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># type some characters</span> + assume-console [ + type <span class="Constant">[012]</span> + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .012a .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># back to original text</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[3]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .3a .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-typing-enter [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># new line</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">8</span> + press enter + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . abc .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># line is indented</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">5</span> + ] + <span class="Comment"># back to original text</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># cursor should be at end of line</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . abc1 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># redo typing</span> + +<span class="muScenario">scenario</span> editor-redo-typing [ + <span class="Comment"># create an editor, type something, undo</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + type <span class="Constant">[012]</span> + press ctrl-z + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># all characters must be back</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .012a .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[3]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .0123a .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-redo></span> [ + <span class="Delimiter">{</span> + typing:address:insert-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">typing:variant</span> + <span class="muControl">break-unless</span> typing + insert-from:address:duplex-list<span class="Special"> <- </span>get *typing, <span class="Constant">insert-from:offset</span> <span class="Comment"># ignore insert-to because it's already been spliced away</span> + <span class="Comment"># assert insert-to matches next-duplex(*before-cursor)</span> + insert-duplex-range *before-cursor, insert-from + <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> + *cursor-row<span class="Special"> <- </span>get *typing, <span class="Constant">after-row:offset</span> + *cursor-column<span class="Special"> <- </span>get *typing, <span class="Constant">after-column:offset</span> + top:address:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + *top<span class="Special"> <- </span>get *typing, <span class="Constant">after-top-of-screen:offset</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-redo-typing-empty [ + <span class="Comment"># create an editor, type something, undo</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + type <span class="Constant">[012]</span> + press ctrl-z + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># all characters must be back</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .012 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[3]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .0123 .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muScenario">scenario</span> editor-work-clears-redo-stack [ + <span class="Comment"># create an editor with some text, do some work, undo</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + type <span class="Constant">[1]</span> + press ctrl-z + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># do some more work</span> + assume-console [ + type <span class="Constant">[0]</span> + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .0abc .</span> + <span class="Constant"> .def .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># nothing should happen</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .0abc .</span> + <span class="Constant"> .def .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-redo-typing-and-enter-and-tab [ + <span class="Comment"># create an editor</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># insert some text and tabs, hit enter, some more text and tabs</span> + assume-console [ + press tab + type <span class="Constant">[ab]</span> + press tab + type <span class="Constant">[cd]</span> + press enter + press tab + type <span class="Constant">[efg]</span> + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . ab cd .</span> + <span class="Constant"> . efg .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">7</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># typing in second line deleted, but not indent</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . ab cd .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># undo again</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># indent and newline deleted</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">8</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . ab cd .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># undo again</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># empty screen</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># first line inserted</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">8</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . ab cd .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo again</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># newline and indent inserted</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . ab cd .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo again</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># indent and newline deleted</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">7</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . ab cd .</span> + <span class="Constant"> . efg .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># undo cursor movement and scroll</span> + +<span class="muScenario">scenario</span> editor-can-undo-touch [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">1</span> + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># click undone</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .1abc .</span> + <span class="Constant"> .def .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><move-cursor-begin></span> [ + before-cursor-row:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-row:offset</span> + before-cursor-column:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-column:offset</span> + before-top-of-screen:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> +] +<span class="muRecipe">before</span> <span class="Constant"><move-cursor-end></span> [ + after-cursor-row:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-row:offset</span> + after-cursor-column:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-column:offset</span> + after-top-of-screen:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> undo-coalesce-tag + <span class="Comment"># if previous operation was also a move, and also had the same coalesce</span> + <span class="Comment"># tag, coalesce with it</span> + undo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + <span class="muControl">break-unless</span> *undo + op:address:operation<span class="Special"> <- </span>first *undo + move:address:move-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">move:variant</span> + <span class="muControl">break-unless</span> move + previous-coalesce-tag:number<span class="Special"> <- </span>get *move, <span class="Constant">tag:offset</span> + coalesce?:boolean<span class="Special"> <- </span>equal undo-coalesce-tag, previous-coalesce-tag + <span class="muControl">break-unless</span> coalesce? + after-row:address:number<span class="Special"> <- </span>get-address *move, <span class="Constant">after-row:offset</span> + *after-row<span class="Special"> <- </span>copy after-cursor-row + after-column:address:number<span class="Special"> <- </span>get-address *move, <span class="Constant">after-column:offset</span> + *after-column<span class="Special"> <- </span>copy after-cursor-column + after-top:address:number<span class="Special"> <- </span>get-address *move, <span class="Constant">after-top-of-screen:offset</span> + *after-top<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + <span class="muControl">break</span> <span class="Constant">+done-adding-move-operation:label</span> + <span class="Delimiter">}</span> + op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + *op<span class="Special"> <- </span>merge <span class="Constant">1/move-operation</span>, before-cursor-row, before-cursor-column, before-top-of-screen, after-cursor-row, after-cursor-column, after-top-of-screen, undo-coalesce-tag + editor<span class="Special"> <- </span>add-operation editor, op +<span class="Constant"> +done-adding-move-operation</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-undo></span> [ + <span class="Delimiter">{</span> + move:address:move-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">move:variant</span> + <span class="muControl">break-unless</span> move + <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> + top:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + *cursor-row<span class="Special"> <- </span>get *move, <span class="Constant">before-row:offset</span> + *cursor-column<span class="Special"> <- </span>get *move, <span class="Constant">before-column:offset</span> + *top<span class="Special"> <- </span>get *move, <span class="Constant">before-top-of-screen:offset</span> + <span class="Delimiter">}</span> +] + +<span class="muScenario">scenario</span> editor-can-undo-scroll [ + <span class="Comment"># screen has 1 line for menu + 3 lines</span> + assume-screen <span class="Constant">5/width</span>, <span class="Constant">4/height</span> + <span class="Comment"># editor contains a wrapped line</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">cdefgh]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Comment"># position cursor at end of screen and try to move right</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">3</span> + press right-arrow + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Comment"># screen scrolls</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> +<span class="Constant"> .cdef↩.</span> + <span class="Constant"> .gh .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moved back</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + <span class="Comment"># scroll undone</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> +<span class="Constant"> .cdef↩.</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .b .</span> +<span class="Constant"> .cde1↩.</span> + <span class="Constant"> .fgh .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-left-arrow [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">1</span> + press left-arrow + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves back</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .def .</span> + <span class="Constant"> .g1hi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-up-arrow [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor</span> + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">1</span> + press up-arrow + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves back</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .def .</span> + <span class="Constant"> .g1hi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-down-arrow [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press down-arrow + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves back</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .d1ef .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-ctrl-f [ + <span class="Comment"># create an editor with multiple pages of text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d</span> +<span class="Constant">e</span> +<span class="Constant">f]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># scroll the page</span> + assume-console [ + press ctrl-f + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen should again show page 1</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-page-down [ + <span class="Comment"># create an editor with multiple pages of text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d</span> +<span class="Constant">e</span> +<span class="Constant">f]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># scroll the page</span> + assume-console [ + press page-down + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen should again show page 1</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .b .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .d .</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-ctrl-b [ + <span class="Comment"># create an editor with multiple pages of text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d</span> +<span class="Constant">e</span> +<span class="Constant">f]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># scroll the page down and up</span> + assume-console [ + press page-down + press ctrl-b + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen should again show page 2</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .d .</span> + <span class="Constant"> .e .</span> + <span class="Constant"> .f .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-page-up [ + <span class="Comment"># create an editor with multiple pages of text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> +<span class="Constant">b</span> +<span class="Constant">c</span> +<span class="Constant">d</span> +<span class="Constant">e</span> +<span class="Constant">f]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># scroll the page down and up</span> + assume-console [ + press page-down + press page-up + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen should again show page 2</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .d .</span> + <span class="Constant"> .e .</span> + <span class="Constant"> .f .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-ctrl-a [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor, then to start of line</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press ctrl-a + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves back</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .d1ef .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-home [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor, then to start of line</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press home + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves back</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .d1ef .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-ctrl-e [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor, then to start of line</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press ctrl-e + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves back</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .d1ef .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-end [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor, then to start of line</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press end + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves back</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .d1ef .</span> + <span class="Constant"> .ghi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muScenario">scenario</span> editor-separates-undo-insert-from-undo-cursor-move [ + <span class="Comment"># create an editor, type some text, move the cursor, type some more text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + type <span class="Constant">[abc]</span> + left-click <span class="Constant">1</span>, <span class="Constant">1</span> + type <span class="Constant">[d]</span> + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .adbc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># last letter typed is deleted</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># undo again</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># no change to screen; cursor moves</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + <span class="Comment"># undo again</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># screen empty</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> . .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># first insert</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + <span class="Comment"># redo again</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># redo again</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># second insert</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .adbc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] +] + +<span class="muScenario">scenario</span> editor-can-undo-multiple-arrows-in-the-same-direction [ + <span class="Comment"># create an editor with some text</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># move the cursor</span> + assume-console [ + left-click <span class="Constant">2</span>, <span class="Constant">1</span> + press right-arrow + press right-arrow + press up-arrow + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># up-arrow is undone</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + <span class="Comment"># undo again</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># both right-arrows are undone</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] +] + +<span class="Comment"># redo cursor movement and scroll</span> + +<span class="muScenario">scenario</span> editor-redo-touch [ + <span class="Comment"># create an editor with some text, click on a character, undo</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def</span> +<span class="Constant">ghi]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + assume-console [ + left-click <span class="Constant">3</span>, <span class="Constant">1</span> + press ctrl-z + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + ] + <span class="Comment"># cursor moves to left-click</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">3</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .def .</span> + <span class="Constant"> .g1hi .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-redo></span> [ + <span class="Delimiter">{</span> + move:address:move-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">move:variant</span> + <span class="muControl">break-unless</span> move + <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> + *cursor-row<span class="Special"> <- </span>get *move, <span class="Constant">after-row:offset</span> + *cursor-column<span class="Special"> <- </span>get *move, <span class="Constant">after-column:offset</span> + top:address:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + *top<span class="Special"> <- </span>get *move, <span class="Constant">after-top-of-screen:offset</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># undo backspace</span> + +<span class="muScenario">scenario</span> editor-can-undo-and-redo-backspace [ + <span class="Comment"># create an editor</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># insert some text and hit backspace</span> + assume-console [ + type <span class="Constant">[abc]</span> + press backspace + press backspace + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="Comment"># save operation to undo</span> +<span class="muRecipe">after</span> <span class="Constant"><backspace-character-begin></span> [ + top-before:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> +] +<span class="muRecipe">before</span> <span class="Constant"><backspace-character-end></span> [ + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> backspaced-cell <span class="Comment"># backspace failed; don't add an undo operation</span> + top-after:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + <span class="Delimiter">{</span> + <span class="Comment"># if previous operation was an insert, coalesce this operation with it</span> + <span class="muControl">break-unless</span> *undo + op:address:operation<span class="Special"> <- </span>first *undo + deletion:address:delete-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">delete:variant</span> + <span class="muControl">break-unless</span> deletion + previous-coalesce-tag:number<span class="Special"> <- </span>get *deletion, <span class="Constant">tag:offset</span> + coalesce?:boolean<span class="Special"> <- </span>equal previous-coalesce-tag, <span class="Constant">1/coalesce-backspace</span> + <span class="muControl">break-unless</span> coalesce? + delete-from:address:address:duplex-list<span class="Special"> <- </span>get-address *deletion, <span class="Constant">delete-from:offset</span> + *delete-from<span class="Special"> <- </span>copy *before-cursor + backspaced-so-far:address:address:duplex-list<span class="Special"> <- </span>get-address *deletion, <span class="Constant">deleted-text:offset</span> + insert-duplex-range backspaced-cell, *backspaced-so-far + *backspaced-so-far<span class="Special"> <- </span>copy backspaced-cell + after-row:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-row:offset</span> + *after-row<span class="Special"> <- </span>copy *cursor-row + after-column:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-column:offset</span> + *after-column<span class="Special"> <- </span>copy *cursor-column + after-top:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-top-of-screen:offset</span> + *after-top<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + <span class="muControl">break</span> <span class="Constant">+done-adding-backspace-operation:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># if not, create a new operation</span> + op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + deleted-until:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + *op<span class="Special"> <- </span>merge <span class="Constant">2/delete-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, backspaced-cell/deleted, *before-cursor/delete-from, deleted-until, <span class="Constant">1/coalesce-backspace</span> + editor<span class="Special"> <- </span>add-operation editor, op +<span class="Constant"> +done-adding-backspace-operation</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-undo></span> [ + <span class="Delimiter">{</span> + deletion:address:delete-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">delete:variant</span> + <span class="muControl">break-unless</span> deletion + start2:address:address:duplex-list<span class="Special"> <- </span>get-address *editor, <span class="Constant">data:offset</span> + anchor:address:duplex-list<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-from:offset</span> + <span class="muControl">break-unless</span> anchor + deleted:address:duplex-list<span class="Special"> <- </span>get *deletion, <span class="Constant">deleted-text:offset</span> + old-cursor:address:duplex-list<span class="Special"> <- </span>last-duplex deleted + insert-duplex-range anchor, deleted + <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> + *before-cursor<span class="Special"> <- </span>copy old-cursor + *cursor-row<span class="Special"> <- </span>get *deletion, <span class="Constant">before-row:offset</span> + *cursor-column<span class="Special"> <- </span>get *deletion, <span class="Constant">before-column:offset</span> + top:address:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + *top<span class="Special"> <- </span>get *deletion, <span class="Constant">before-top-of-screen:offset</span> + <span class="Delimiter">}</span> +] + +<span class="muRecipe">after</span> <span class="Constant"><handle-redo></span> [ + <span class="Delimiter">{</span> + deletion:address:delete-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">delete:variant</span> + <span class="muControl">break-unless</span> deletion + start:address:duplex-list<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-from:offset</span> + end:address:duplex-list<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-until:offset</span> + remove-duplex-between start, end + <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> + *cursor-row<span class="Special"> <- </span>get *deletion, <span class="Constant">after-row:offset</span> + *cursor-column<span class="Special"> <- </span>get *deletion, <span class="Constant">after-column:offset</span> + top:address:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + *top<span class="Special"> <- </span>get *deletion, <span class="Constant">after-top-of-screen:offset</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># undo delete</span> + +<span class="muScenario">scenario</span> editor-can-undo-and-redo-delete [ + <span class="Comment"># create an editor</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># insert some text and hit delete and backspace a few times</span> + assume-console [ + type <span class="Constant">[abcdef]</span> + left-click <span class="Constant">1</span>, <span class="Constant">2</span> + press delete + press backspace + press delete + press delete + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .af .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># undo deletes</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .adef .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># undo backspace</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abdef .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># undo first delete</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abcdef .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo first delete</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># first line inserted</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abdef .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo backspace</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># first line inserted</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .adef .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Comment"># redo deletes</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># first line inserted</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .af .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><delete-character-begin></span> [ + top-before:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> +] +<span class="muRecipe">before</span> <span class="Constant"><delete-character-end></span> [ + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> deleted-cell <span class="Comment"># delete failed; don't add an undo operation</span> + top-after:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + <span class="Delimiter">{</span> + <span class="Comment"># if previous operation was an insert, coalesce this operation with it</span> + <span class="muControl">break-unless</span> *undo + op:address:operation<span class="Special"> <- </span>first *undo + deletion:address:delete-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">delete:variant</span> + <span class="muControl">break-unless</span> deletion + previous-coalesce-tag:number<span class="Special"> <- </span>get *deletion, <span class="Constant">tag:offset</span> + coalesce?:boolean<span class="Special"> <- </span>equal previous-coalesce-tag, <span class="Constant">2/coalesce-delete</span> + <span class="muControl">break-unless</span> coalesce? + delete-until:address:address:duplex-list<span class="Special"> <- </span>get-address *deletion, <span class="Constant">delete-until:offset</span> + *delete-until<span class="Special"> <- </span>next-duplex *before-cursor + deleted-so-far:address:address:duplex-list<span class="Special"> <- </span>get-address *deletion, <span class="Constant">deleted-text:offset</span> + *deleted-so-far<span class="Special"> <- </span>append-duplex *deleted-so-far, deleted-cell + after-row:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-row:offset</span> + *after-row<span class="Special"> <- </span>copy *cursor-row + after-column:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-column:offset</span> + *after-column<span class="Special"> <- </span>copy *cursor-column + after-top:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-top-of-screen:offset</span> + *after-top<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + <span class="muControl">break</span> <span class="Constant">+done-adding-delete-operation:label</span> + <span class="Delimiter">}</span> + <span class="Comment"># if not, create a new operation</span> + op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + deleted-until:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + *op<span class="Special"> <- </span>merge <span class="Constant">2/delete-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, deleted-cell/deleted, *before-cursor/delete-from, deleted-until, <span class="Constant">2/coalesce-delete</span> + editor<span class="Special"> <- </span>add-operation editor, op +<span class="Constant"> +done-adding-delete-operation</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># undo ctrl-k</span> + +<span class="muScenario">scenario</span> editor-can-undo-and-redo-ctrl-k [ + <span class="Comment"># create an editor</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># insert some text and hit delete and backspace a few times</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">1</span> + press ctrl-k + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># first line inserted</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .a1 .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><delete-to-end-of-line-begin></span> [ + top-before:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> +] +<span class="muRecipe">before</span> <span class="Constant"><delete-to-end-of-line-end></span> [ + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> deleted-cells <span class="Comment"># delete failed; don't add an undo operation</span> + top-after:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + deleted-until:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + *op<span class="Special"> <- </span>merge <span class="Constant">2/delete-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, deleted-cells/deleted, *before-cursor/delete-from, deleted-until, <span class="Constant">0/never-coalesce</span> + editor<span class="Special"> <- </span>add-operation editor, op +<span class="Constant"> +done-adding-delete-operation</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># undo ctrl-u</span> + +<span class="muScenario">scenario</span> editor-can-undo-and-redo-ctrl-u [ + <span class="Comment"># create an editor</span> + assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> + <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> +<span class="Constant">def]</span> + <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Comment"># insert some text and hit delete and backspace a few times</span> + assume-console [ + left-click <span class="Constant">1</span>, <span class="Constant">2</span> + press ctrl-u + ] + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + <span class="Comment"># undo</span> + assume-console [ + press ctrl-z + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .abc .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> + ] + <span class="Comment"># redo</span> + assume-console [ + press ctrl-y + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + <span class="Comment"># first line inserted</span> + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .c .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + memory-should-contain [ + <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> + ] + <span class="Comment"># cursor should be in the right place</span> + assume-console [ + type <span class="Constant">[1]</span> + ] + run [ + editor-event-loop screen:address, console:address, <span class="Constant">2</span>:address:editor-data + ] + screen-should-contain [ + <span class="Constant"> . .</span> + <span class="Constant"> .1c .</span> + <span class="Constant"> .def .</span> +<span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> + <span class="Constant"> . .</span> + ] +] + +<span class="muRecipe">after</span> <span class="Constant"><delete-to-start-of-line-begin></span> [ + top-before:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> +] +<span class="muRecipe">before</span> <span class="Constant"><delete-to-start-of-line-end></span> [ + <span class="Delimiter">{</span> + <span class="muControl">break-unless</span> deleted-cells <span class="Comment"># delete failed; don't add an undo operation</span> + top-after:address:duplex-list<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:list<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + deleted-until:address:duplex-list<span class="Special"> <- </span>next-duplex *before-cursor + *op<span class="Special"> <- </span>merge <span class="Constant">2/delete-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, deleted-cells/deleted, *before-cursor/delete-from, deleted-until, <span class="Constant">0/never-coalesce</span> + editor<span class="Special"> <- </span>add-operation editor, op +<span class="Constant"> +done-adding-delete-operation</span> + <span class="Delimiter">}</span> +] + +<span class="Comment"># todo:</span> +<span class="Comment"># operations for recipe side and each sandbox-data</span> +<span class="Comment"># undo delete sandbox as a separate primitive on the status bar</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |